Getting Started with Cloud Computing | Idan Gabrieli | Skillshare

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Lessons in This Class

36 Lessons (2h 32m)
    • 1. Course Introduction

    • 2. The Evolution into the Cloud Revolution

    • 3. Traditional IT - Plan, Buy and Operate the Data Center

    • 4. The First Wave started with SaaS

    • 5. The Digital Transformation

    • 6. The Birth of Hyper-scale Public Data Centers

    • 7. A Catalyst for Innovation

    • 8. Rise of Artificial Intelligent

    • 9. The Five Characteristics of Cloud Computing

    • 10. #1 - On Demand Self-Service

    • 11. #2 - Broad Network Access

    • 12. #3 - Resource Pooling

    • 13. #4 - Rapid Elasticity

    • 14. #5 - Measured Service

    • 15. Cloud Service Models

    • 16. The Cloud Computing Stack

    • 17. IaaS - Infrastructure as a Service

    • 18. PaaS - Platform as a Service

    • 19. SaaS - Software as a Service

    • 20. Cloud Deployment Models

    • 21. Public Cloud - Definition

    • 22. Public Cloud Global Infrastructure

    • 23. Public Cloud Products and Services

    • 24. Private Cloud Definition

    • 25. Private Cloud Key Benefits

    • 26. Hybrid Cloud

    • 27. Community Cloud

    • 28. Cloud Computing Management Platforms

    • 29. So, Why using a Public Cloud Service ?

    • 30. #1 - Easy and Dynamic Scalability

    • 31. #2 - Economies of Scale

    • 32. #3 - Capital and Operational Costs

    • 33. #4 - Increased Reliability

    • 34. #5 - Business Agility and Speed

    • 35. #6 - Yes, Security

    • 36. Course Summary

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About This Class


Cloud Computing is becoming the mainstream in the IT world as a growing amount of companies around the globe are in the process of a digital transforming while using the power of cloud-based services.

Evolution leading to Revolution – traditional IT already uses a variety of virtualization technologies to better utilize their physical IT resources. Moving to private clouds is another step in the data center evolution, where existing infrastructure will be utilized and upgraded to provide cloud-based services. In addition, public cloud services are getting huge market momentum as more and more companies are migrating their applications to 3rd party cloud providers. Public clouds are now leading companies to new business frontiers.

Basic Skills for Everyone – cloud computing and cloud services is touching almost every corner around us, whether you are a software developer, IT professional, system administrator, IT manager, solution architect, project manager, marketing manager, product manager, sales engineer, security expert, network expert, students entering the IT world and so on.     

Would you like to join the Cloud Computing Revolution? 

Meet Your Teacher

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Idan Gabrieli

Pre-sales Manager | Cloud and AI Expert


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1. Course Introduction: Cloud Computing is one of the biggest technology revolution around us. It is changing the way consumers consume services, changing the ways organization developed and run application and completely reshaping all business models in multiple industry. It is providing a growing amount off opportunities for small and big businesses to expand into new markets, innovate more quickly and create new value application in data all sitting somewhere in the cloud, managed and operated by someone else. And end users are basically using cloud based services from any location would white. This revolution must be supported by people like you and me that can understand the underlying technology, the best option in the market, the business value and evaluate the opportunities and also the wrist. Cloud computing is touching almost any corner in our life. It is transforming the ICTY world, and the impact wave is going in spreading around anyone in the high tech industry. Should Glenn Cloud computing and ed cloud skills not everyone, of course, are going to be cloud experts or cloud architect. But the basic language is essential skill. Think on what you're doing today or in the near future. Most probably that cloud computing will be there as I found by myself. A learning cloud. Computing is a journey. The main goal off this course is to provide you a solid background while reaching a level where you will be able to explain cloud computing to someone else and be ableto continue learning the subject in multiple directions. Eso This is starting point and I would like to wish you an interesting journey. See you inside and let's get started. 2. The Evolution into the Cloud Revolution: hi and welcome. My name is Don and we are planning to start our journey. A new technologies like a cloud computing always an interesting subject, and that's great. But I always like to understand things a little bit more deeply and still see the big picture before running into more details. We should always try to connect between a problem or a challenge. And the relevant solution. A cloud computing imaged is a solution to solve specific problems. So the first step in our journey is a little bit about his story, where and why Everything started a without we like now. And well, we probably going to be in the near future. The whole IittIe market is transforming and changing shape based on small evolution steps into a completely new creature. And this is the cloud revolution. 3. Traditional IT - Plan, Buy and Operate the Data Center: a long time ago. Okay, Maybe not so long time ago. I'm talking about few years looking back on the I D market. A diet infrastructure in most organization was completely owned and managed by each organization. It was usually on premises. I t deployment in one, maybe two data centers were almost all application. We're running inside organization that the centers any software application that was used inside the data center was license based and also used specific physical resources like servers, a network connection, bend weed and storage capacity. The ICTY team was doing and controlling everything, planing what kind of hardware will be needed in the upcoming years and then started a long purchase process toe by this very costly hardware set up, install that in another center and, of course, configured and operate those resources for the benefits off all end users in the organization. Basically, it is quite logically lifecycle plane by install, operate and start all over again. When demands are changing, the organization must invest in hardware, software, ongoing upgrades, maintenance, support, customization and, of course, manpower. And all of those items are translated to money, the capital and operational costs that are associated with handling I t now this traditional i D model. It was quite good for many years and we will be able to find many organization and that are still operating in such mood. Now, something very useful we need to define and use as early as possible is the concept off application workload. Any software application that is running and performing a specific walk consume resource is like a processing CPU memory and network bend with etcetera. The consumption off resource is can dynamically change according to the behavior off the specific application. I think on some email IQ chain servers it is. More users are connected to the email accounts, then the load on that email application is rising, consuming more resources. Measuring application workload is important and it is used for a variety off use cases basically would like to know if the allocated resource is of good enough to the application load. If something is not right, we can do something about it. For example, when you consider toe by a new leapt oh pay, then probably you will be able to find many application war clothes tests being performed to evaluate the Hado performance off that specific new laptop. So in such case and defined workload, it can be specified as a benchmark when evaluating a computer system in terms off performance. How easily the computer handle the workload. What is the response time for a user request and how much work is accomplished over appeared off time. Another example that is more related to our subject is to measure all kind off Parliament er's on the hardware equipment, running a specific application, helping to evaluate the load in a given time. It can be the CPU and memory workload, a put an output throughput, available storage capacity, a network bandwidth and so on. Now let's start to use the concept off application workloads in the context off traditional 80. If you will ask some I t manager, it is or have biggest challenge is the problem off resource allocation At the end, there are limited amount of physical resources that can be allocated the I T team boat, a specific amount off servers based on limited budget, and the servers were divided to the application workload. Running in the data center as a simple example, he we have two application A and B the vertical line on the left side is the application war clothes over time. In addition for application A, the ICTY team, I located two servers and for application be they allocated five servers now looking from left to right we can see the application workload partners in specific time Interval Let's assume this is over the last 24 hours. Now you are the I T manager. What kind of problems do you see? You think about it for a few seconds There are two main clear poor blimps we can see here The 1st 1 Is that doing the big time application A An application be are using almost all allocated Resource is reaching the limit or cap vacation A is reaching the two servers A maximum A location and application Bees is reaching the five sevens Maxima location. They can't glow and expand toe additional resources. This was the allocated resources for each one of them. In that case, this problem is called over utilised resource is is doing the big time. The resources are becoming a bottleneck. The second problem is gold Underutilized resource is it can be on every bridge. For example take a look on this point, the war clothes on application be is almost zero very low and in violent on the same time, interval the workload on application A is at the big point. Now it is quite obvious that it makes sense to utilize the unused resource is allocated to application P and move them toe application A just for this time period. But assuming those application are running on separated service, the resource is cannot be shared in most of the time they're actually underutilized in idle time. Now imagine you have 200 service in the data centers running 100 application, and we have much more complicated situation. The good news is that this problem was solved to some level using a new, important technology that was developed and for helping to optimize the usage off. Resource is inside the data center. I saw really familiar with the concept off utilization. So what? We explained that quickly a brutalization separates resource is and services from the underlying physical delivery environment. Now, with this approach, we can Kate, maybe virtual system within a single or multiple physical system if we have physical resource is like servers storage in network devices, we can use a visual ization management layer that is called here hyper vise. Oh, sitting on top of the physical resources. Now, using this hyper visor, we can divide the underlying physical resources to multiple virtual Resource is also called virtual machines. Each village jewel machine is like a dedicated village jewel container with specific operation system in specific application running inside they movinto totalization technologies. It was a useful evolution for traditional. I tee off course helping toe handle the issue of more dynamic resource is usage and ongoing optimization. Because the data center making the I T infrastructure much more efficient and flexible, it will be very hard today to find any letter sent worldwide that is not using virtualization technology. Now. Everything was fine until the Internet or the World Wide Web completely changed the way application and services are consumed. And this is the subject off our next chapter. 4. The First Wave started with SaaS: consumers like you and me are constantly used services and applications over the Internet. It walks us and manage data. All I will searching is done online. A. We upload data to social media sites, accessing aware email accounts, designing some electrical circuit, using a Web tool, storing fires or daytime, some cloud service and much more. I will. Internet speed and performance is not an issue anymore. A. Consumers are hella the using cloud services for kissing content and services on multiple devices. It delivered almost any well users are located. Some of those services are so useful that it will be hard to imagine our life without them . Now. What's the relation to cloud computing? Those services are called SAS Software as a service, and they are actually the first cloud based services that emerged in the consumer market and then slowly moved also to the business market application and data. Sitting somewhere in the cloud managed and operated by someone else. And we as end users or customers of getting online access for many location would white. We just care about things like experience, performance, data integrity and, in some cases, also for the level of security and so one moving from the consumer market into the business market, where organization can be the customers for such software as a service application. A think about beverage company that we can see here In this simple diagram. There are several branch location connected to some central data center where there are countless off the application being used by end users for the daily job. Now what if we can take some off those application and move them to the cloud toe, the Internet and the first bio new off this new software as a service model for the business market? It was a company called Salesforce if they started to provide a CME service over the Internet instead, is a license based application installed in the organization that the center. And that was a starting point for a major mind shift for the business market that was used to buy software in hardware. And their success actually started the SAS Aries, where more and more softer Vandals started to move in that direction. And today we have quite a comprehensive list off application that are not proposed as a service for the business market. Now you can ask me. What's the relation to traditional ICTY Data Center that we just learned in the previous chapter? Okay, that's a good question. This new SAS market trend was also a major revolution, stepping i d. When companies started to shift some off the application installed in the data center. Or maybe multiple desktop computers used by end users into the club based services running on top on top, a delight and being provided by 1/3 party service providers. 5. The Digital Transformation: On our last shop till we discussed on how new cloud services called SAS Software as a Service started in the consumer market and then evolved also into the business market. And that was the first wave of Cloud computing. Now we are ready to move to one of the most important and interesting market trend, a coast, almost all industries that will help us understand the big picture. It is called the digital transformation. I will vote is becoming more connected than ever before. A new super smart technologies. You know, I'll keep being imbedded everywhere we go. And it's transforming the way we leave, walk by new things, learn, play, communicate with other people and so on. On the business side, the digital transformation is reshaping completely all kind of legacy business models into the future where everything is around ideas in data. There are some companies that are leading this amazing transformation. And as a nice example, let's take Amazon echo on the left side and Google Home product. Those devices. Nicely designed. We told kind of interesting features, but by themself, del, quite simple piece of technologies. Now because they are connected to the internet in use all kind of cloud-based services to get an analyze data. They'll becoming very powerful devices. And the power is keep going is the clouds in the background are becoming larger in smarter. Now, this new power is actually divided between us, the consumer, with what we can achieve today, we'd product that caused below $200. And on the other side, the power is of course being used by those companies as they can utilize a monetize the data that we keep generate. Now going, amount of companies in the business world and the stand, the power is actually shifting to the consumers as they are expecting more value for less money, better services, better communication options, and so on. And of course, all kinds of technologies are becoming more useful when a specific business would like to better understand the market, what customers are looking for, what is their experience, and so on. It is clear that because more and more actions are being done online using websites or any end device connected to the internet like we saw just in the previous slide. Many things can be monitored, measured, analyzed, and then be translated into some useful data when we said something online or upload something to the internet. This information is dynamically analyzed and then sold somehow to other companies that can make money from this data. This is the digital age. Will data is becoming at the center of many business models. Okay, think about an online supermarket site. We have thousands of people that are searching and selecting product using the side. It will be extremely useful to understand right now in real time that the growing amount of people or users are searching a specific product over, let's say the last five hours. Based on this information, the supermarket can decide maybe to order more units of this product, or maybe shared this information with the supplier, or maybe create some discounted deal. And we will be able to find countless small examples on how this data can be monetized in be used to make more money. The digital business model is basically more and more data-centric. Everything is around data. How can we collect, store, and analyze this data for making smart business decision? Companies are looking for ways to put data at the central of the businesses. Otherwise, there will be out of business. This is the digital transformation that many organizations are trying to achieve. And the demand for technologies helping to move in that direction is keep growing. How to monetize data, be more flexible, provide better service, invents new digital business models. Be more connected with customers and better collaborate with partners. Now, if I will summarize the main needed characteristics of the digital basis, it will be the faster the company can get new ideas to the market using innovation, the better the company can collect, analyze, and predict data almost in real time and make decision on top of that. And lasting the quicker the company can adapt the services and the product based on customers feedback. But the private data center that we discussed so far in traditional id is not designed to support such growing and keep changing business domains that are based on ongoing innovation. Now, as a simple example is specific organization would like to focus on new business model. I locate the source as soon as possible. A test that in the field, and maybe after five months killed that initiative because it's not really walking and reallocate the resource to other project. This kind of agility is needed is things are becoming more dynamic in the digital age. In addition, application are now more connected to the internet and end users are getting much more dynamic application workloads. And again, the private data center is quite limited to handle such demands in the context of scalability. In addition to that, now we have more data source to handle, okay, more places that we can collect data. The volume of data is getting bigger. And there are more variety of data types, different types of data that we need to collect and analyze. Now in many cases, big data and all kinds of analytics technologies added to the organization data centers helping to manage and maybe utilize this data somehow. But the reality is that not all organizations are in position to use sophisticated technologies. Not everyone. I'll Google, Facebook or Amazon. Most business organization can't enjoy those new technologies for many reasons. And it makes sense that some level of abstraction layer is needed for helping more and more organization and companies to take advantage of such technologies. And now we're getting to the main value proposition of cloud computing. Providing an obstruction layer to super-complicated technology's being used in the cloud. And providing new types of services that are needed for companies to take advantage and help them while going into the digital transformation. Now let's speak about cloud computing. 6. The Birth of Hyper-scale Public Data Centers: the first company that understood the business opportunity off cloud computing as an infrastructure solution. Was Amazon okay doing a 2000 and six Amazon introduced the Amazon Web services or, in short, a double us that provides on demand cloud computing platform A abused by individuals or companies on a paid subscription basis. Basically, AWS is a huge collection off I T infrastructure, including servers, network devices and storage spaced A located in multiple worldwide hyper scale data centers and that are connected with superfast networks. The idea was simple but still brilliant and quite innovative. If companies are struggling, toe build and maintain the private that the centers A with with the top available technologies in the market, then Amazon can do that for them. Now those companies a like we see here, will be connected to a central cloud service centers where they can dynamically allocate the needed resource is for May shed. Pull off resource is managed by by the cloud service provider in our case, Amazon, and now they will be able to utilize the most powerful technologies led, implemented and used inside the cloud. In that sense, cloud computing started toe fulfill some off the capabilities that will missing in the market for helping organization in the digital transformation process. If we will use the official cloud computing definition form N I s t the National Institute Off Standard and Technologies, then cloud computing is a model for enabling convenient on demand network access to a shared pull off configurable computing resources that can be rapidly provisioned and released with minimal management effort or service provided in production. Okay, this is something we will break into pieces in our cause. In addition, this cloud model is composed off five essential important characteristics tree service models and four deployment models. Now, this definition is is so useful that we will use that in later section in our cost toe break down the cloud computing toe. It's basic components. Now Can you guess what really happened when cloud computing was introduced by Amazon aws? Well, not so much in those early days. Cloud computing was really considered, you know, as a strange concept that is too drastic a step for the market. And most off the I T and software market ignored this new concept, including business customers, software vendors and even competitors. Amazon were running a this new business line. Amazon like that bless without any competition. For several years, they actually started toe educate the market. Now small startup companies, well, the first early adopters A of cloud computing and in the first customers off AWS. But other companies made human lot size companies almost glowed. This new club computing wave fall kind off reasons. Some of them are saying it's not safe, it's not secured. It will be more costly. It went services then by them, as they used to do for so many years, and they don't want to lose control or that application off bait on And, of course, other reasons. Now, after a few years, either giants like Google, Microsoft, Oracle and many others companies understood that the market is shifting in that direction. And it will be smart to join in. Think about a company like Google that was already operating. Hyper scale data centers worldwide fall kind off Web services like will search, of course. And YouTube's it there. I mean, Google are led doing that for many years, okay and quite well, and it makes sense that it will use the same infrastructure as a new business line and become a club provider for organization Now. Today, after more than a decade, a Amazon is still the biggest player in the market, and I don't think it would be changed a lot in the coming years because off the early starting point. But other competitors are closing the gaps quite fast, at least from the technology technology part and some of them ability offering almost similar product and services. And each one of them is taking a little bit different direction, trying to be a trying to differentiate their offer in the market. 7. A Catalyst for Innovation: first forward toe. This time almost. We're starting 2000 and 18 and probably for you using toe the near future Cloud computing is becoming more matured and accepted solution for replacing or even enhancing traditional 80. It was started as emerging new technologies, and now it is an established Internet based solution that is gaining widespread acceptance . More and more business companies and organization are moving in that direction. As a result, the market movement is elegy influencing multiple industries, and it is really conceded a major disruptive force in the market. It is completely changing the i T industry transforming the basic business models that were useful for so many years. But more important than that, the whole spa, our off public cloud services are now available to everyone toe every company that is smart enough it to utilize it for the business advantage. Cloud computing is not really just about saving money. It is perceived by more and more companies as a catalyst for innovation. It reality saw the digital businesses require speed and agility that cloud computing can provides through the use of cloud services because it enables global reach off services and information. True and elastic computing environment that is easy to use. I would like to remind you that this is one of the reason why it is important to invest in cloud skills. The market demands for cloud skills is increasing in multiple direction. Form developing new cloud application, immigrating existing application to the cloud promoting and selling cloud solution, a utilizing new advanced services offered by cloud providers. And so one more than that, innovation across multiple industry is rapidly shifting to the cloud, and we'll see more and more vendors. Okay, companies that provide products and services that we provide their solution mainly in the cloud, meaning them products and services will be available mainly as a cloud services. Now the cloud is also become a catalyst for small business gold because it allows them to innovate and more easily penetrate to existing well established market and even create new , completely new market your business models. And while destructive current start to school, I am a new types of business. Models are relatively entering the market, taking, for example, the whole 11 ing market like you did me digital banks, all of them all evilly based on technologies, Digital Data Analytics, network connectivity and so one the adoption rate is growing. Big companies started to embrace it as a strategic decision to focus on the core business and utilize the power of cloud services. If you can't fight it. Joint enterprise and government organizational moving Also grab computing, Placing more a mission. Critical war Clothing Toe the Cloud Multiple Cloud Service provider. I've been going competition. We saw that grabbed more market share in this going a cake. And, yes, cloud computing is really becoming the mainstream. Everything is online and connected. 8. Rise of Artificial Intelligent: I don't want to scare you with some science fiction movies and the bus around it. But artificial intelligence is one of the main direction and where the club computing industry is trying to go today, and also where other industries like, for example, connected calls, it is becoming a race between the big players. Now, why do you think it is becoming so important for cloud computing? Well, two reasons that explosion in real time requirement. In a going amount off consumers in industry application, it is required that system will be ableto automatically collect data, analyze land, adopt and response in real time without human intervention, or at least with minimum human intervention. Many off us already use some form or for artificial intelligence almost every day. For example, speech recognition is usually classified as artificial intelligence as it is quite complex task toe translate what we're saying to text text that can be analyzed. And now they are going number off software and hardware solution that they're trying to utilize machine learning algorithms for pattern recognition and use that a data to train land and become even smarter. I think it's quite interesting and important subject s some planning to develop a dedicated cause. Just about this topic, hopefully in the near future. Now again, What's the relation to cloud computing? Well, this can be a classical example off the value proposition coming with Cloud services. Just think about a small company like a startup that can instantly use the horsepower well off artificial intelligence without trying to develop such capability. In house, such advance artificial intelligence services will be offered by the cloud providers toe anyone that is willing to pay. Were they needed abstraction? Liam Making it simple. Toby consumed and used. Okay, that's all for this section. Thanks for watching so far High hope. It is interesting. Now it's time to move to the building blocks off cloud computing. 9. The Five Characteristics of Cloud Computing: hi and welcome back. My name is he done and in this section will start zooming on the basic definition of cloud computing. Cloud computing is based on five essential characteristic. This what you see here on the right side on demand, self service, broad network access, resource pooling, rapid elasticity and measured service. Each one of them is an important building block for almost any cloud service and cloud solution being used today. But again, what is really cloud computing? According to the official definition Off Cloud Computing, based on the National Institute Off Standard and Technology and I'm reading Right now, Cloud Computing is a model for enabling convenient on demand network access to a shared pull off configurable computing resource that can be rapidly provisioned and released with minimal management effort or service provider interaction. This two sentence summarize really good the concept off a cloud computing. But for anyone that is new, so this concept it is, of course, to high level, and we need to drill into this definition. In addition, this cloud model and I'm continue reading is composed off five essential characteristics three service models and four deployment motors, and we're going to start with detailed definition off the five essential characteristics off cloud computing 10. #1 - On Demand Self-Service: starting with the 1st 1 on demand. Self service was the meaning on the mental service is a major mind shift in how computing resource is Should be provisions instead, off manually contacting some cloud service provider or the I T team in some organization for allocating resources or changing specific configuration, Consumers or end users will be able TOW performs most off the activities by themselves with minimum human interaction, and secondly, they will be able to perform it online on demand. Almost instantly is the key would instantly. This is the mind shift I'm talking about, and users can decide what kind of fighting resource is on it and allocate them in real time now how such level off automation and flexibility is achieved. Okay. Typically, this is being done through a some interactive Web portal, a enabling consumers like you and me toe configure and manage services by our self. The cloud system itself provides some obstruction management layer, also called automation framework, that is heating the complex cloud details, but in parallel provide the level of flexibility to provisional resource is without the help off someone else. Some supporting its can be from AM some may 3rd party service provider or even your own ICTY team in your organization. Basically, you don't need to call someone and wait for some few days approval and then some activation process. You can do it by yourself. Now Let's review in more details the options that are available today to perform on demand Self service. Most cloud systems that are available today will provide several method for end users to manage by themselves. The allocated Village quality sources The first very common option that we l. A dimension is to use some a Web based management portal with all options divided toe categories in very nice way, and that will be the preferred way for most users. And it is great for specific type off activities. The second option is to use a command line, a consul like a shell interface for kind off repeated tasks that require automation and faster configuration. Basically, users are typing command, okay, and then the shell interface can be used Inter actively meaning we can type in the needed commands instead off performing the same activities. Using the Web dashboard and off course, we can use script and all kind of templates, toe make some action a much more automated. The third option is to utilize and use a group off Web AP Eyes exposed by the cloud system and enabling almost complete automation directly form a soft with court or by some external system. Now we're baby eyes are usually based on lest AP eyes meaning request in response over a famous edge to be protocol. The last option is as decay as the case is stand for self development kid. This is for poor camels, where a specific cloud system provide some a native function object classes for different language like Java, PHP bite own and so one toe access different cloud services. I could think about some Web application that is designed form the ground up to seat on a cloud solution, and I actually utilize the cloud capabilities from the program code. This is the concept off using an sdk if I will summarize, then on the mend. Self service is really a key concept in cloud computing, and all of those different options are clearly meant. Toby meant to automate the process and make it easy and flexible for different use cases 11. #2 - Broad Network Access: the second characteristics off Cloud computing is called broad network access, and I think this is quite state forward today, meaning the cloud computing services should be accessed using standard network connection for multiple location and form a wide range off endpoint devices. We didn't touched yet deployment options for cloud computing, and we get to that in more details in later section. But one very common cloud deployment option is called Public Cloud. In the public cloud. The cloud services are provided by Cloud Service provider, and then those services must be accessed by the public form any corner around the world using the global Internet. Now, another option is to use something that is called Private Cloud, where the cloud system is owned and managed by a specific organization. And in that case, it is expected that this system will be available for multiple location using variety off en pointe devices. Think on your outlook. Cooperating will account. In most cases, you access it using your desktop, your computer, mobile phone or some tablet, whether you are in the office connected to the organization, local area network or outside the office on a business trip, users today are expecting to get the same connectivity and access level for all cloud services 12. #3 - Resource Pooling: the next important property off cloud computing is resource pooling. Resource pooling is basically the ability to use a pool off resource for multiple and uses customers consumers, for example, here on the right side, we have a cloud system, and in the middle, agreed off resource is now. We will zoom inside. Then we'll be able to see below physical computing, storage and networking. Resource is, this is the gain, a layer on top of that, some of it totalization Lille. And on top of that, the cloud management platform being used to manage this complex infrastructure. Now, in this set up virtual resource is like VM. Virtual machines can be allocated or pulled form. This underline infrastructure another way to visual that is by looking on the type off clients or users that are using this close system. In the given time we have resource is in the middle of the cloud, and where they are managed is the pool off. Shared resource is now blue users. What you see on the left are uses that are in the process or off provisioning and allocating new cloud services based on the availability sources in the cloud and green users are users that are currently using the cloud system consuming resource is and the last type these orange users that exiting the cloud after removing the allocated, say cloud based services in the resource is that will be at the end, returned to the pool off shed resource. Is Toby allocated to the next user to the next customer? This is the basic concept in cloud computing. Let's read also the official definition there, and I stayed Definition for resource pooling the providers Computing resource is our pulled toe self. Multiple consumers using a multi tenant model with different physical and virtual resource , is dynamically assigned and reassigned according toe consumer demand as we just so in the previous dagger. Okay, this is what we saw and I'm continue reading. There is a sense off location independence in that the consumer generally is no control or knowledge over the exact location off the provided resource is but may be able to specify location at the higher level off obstruction. Okay, when we use the village jewel resource is being pulled automatically by the cloud system from the available pull off resource. We have limited control on where will be the actual physical how'd well location off the allocated resources? In most cases, we can select maybe the highly in high level the region and the data saying the location where we would like to locate our virtual resources and that's good enough to meet specific letting see availability requirement for application sitting in the club. 13. #4 - Rapid Elasticity: so we can use cloud services on demand and provisioned them by ourselves, access them using the network and allocate specifically sources former pull off availability sources. Now, to be able to provide that kind of flexibility, cloud system must support a capability that is good. Rapid elasticity. Rapid elasticity is the ability to quickly scale up and down services. Resource is can be quickly expanded or reduced, depending on demand. And if I will use the nice, thick cloud of finishing them and I'm reading right now, capabilities can be rapidly and elastic. Lee provision in some cases automatically to scale rapidly outward and inward. Commensurate. We demand so. A key feature off club environment is that it provides a platform that that is designed Toby Elastic users can provisioned. Resource is pay for the allocated time period, and when the resource is are no longer needed, they can just release them back to the pull off. Resource is this brings some key values Toe organization customers that using cloud computing, the 1st 1 is tow. Avoid the coast off ideal. A computing resource is, and secondly, is toe quickly response to keep changing demand a good way to visual rapid elasticity is by using an example off application workloads. A war clothes is the amount off idea. Resource is being consumed by a specific application in particular time while doing some work. Okay, this is the definition off workload now. ITV sources. It can be, for example, a process power memories, storage capacity, traffic load and other types off. Resource is now, let's assume that the utilization peach a IittIe resources that I just mentioned can be measured. OK, somehow eso in those measurement can be used to increase or decrease. The allocated ITV sources is signed to a specific application specific application that is creating a workload. Now, looking on the graph on the left side static scaling What's the meaning of static scaling? So we have three a lines. The 1st 1 is predicted workload. What we predicted will be the workload for our application. The second line is experienced Workload. What was the reality? How much our application it was consuming at the particular time in the last one is I t resource is the amount off resource is that we're are located. Okay for our will walk load now in static scaling this what you see right now in the graph is that the ICTY resources are jumping and scaled up today. Predicted peak walk load. Okay, if we take simple example if we predicted and the our application will required 10 gigabyte off memory at the big point, then the allocated member we re sources will be 10 gigabyte when it's scaled up. Now off course, there are many types off workload Parton's. Some of them are constant, some of them are dynamic. They can be random or predictable, as we just saw in this example, and it's really depends about out how the application is being used in so one. What's the nature of the application? But if we look on there now on the graph on the right side and this is what we called elastic scaling now, the allocated resources are increased slowly OK in small intervals. According today, experienced workload the hill walk load. Now when we use elastic scaling resource is can be a provision in and remove the commission much faster, with much tighter alignment between the current workload and the allocated ideally sources . And this is the old idea about rapid elasticity. Elastic scaling is usually implemented by using a feature that is called out of scaling off . If you will open some a cloud service provider, you will see a capability that is called out of scaling. What's the idea about that? Auto scaling is the capability that allow us to automatically ed or remove instances, form some cluster off instances based own increases or decreases in actual load. OK, we can provision a specific cloud service Doesn't matter What what kind of service right now configure. It's something that is gold, a scaling policy Toby used as the scaling condition. And from that point of time, the cloud system will start to monitor. The resource is related to our new service. Now, if the load is crossing some level, okay, a specific resource it will be scaled up it to maintain the performance that we needed that we need in our workload. And if the war club on specifically sauces are decreasing, then the system will automatically perform downscale to minimize the cost there to minimize the amount of resources that are being actually used 14. #5 - Measured Service: the last important characteristics off a cloud. Computing is measured service. Basically, the whole business model of cloud services is based on inventing a particular service for a specific time period. Okay. And if I will use the A nice the definition and I'm reading cloud system automatically control in optimized resource use by leveraging method incapability at some level off obstruction appropriate to the type off service. Now there are many types off services in the cloud and in resource is that can be hinted on demand in parallel to multiple customers, multiple users. So in that scenario, the cloud system must measure Okay, the time a specific service was consumed and be able to build a specific customer. Based on that information, it is similar to our monthly electrical bill. Okay, I will power consumption at the end is money towed and measured by some utility company. So a cloud environment includes some built in capability to truck in charge customers for units off resource being consumed Now using Then I see definition resource usage can be monitored, controlled and reported providing conspiracy for both the provider and consumer off the utilized service. Now, this information is also available to the consumer s so they can track their own consumption, get a lives based on convertible limits, view reports, audits, the actions being performed on the system and basically use that information toe optimize their usage and, at the end, reduced costs in a cloud system. The consumers that are using the system will usually pay for the measured service by a some unit time like in our well or in some cases can be even minutes it with no upfront payments . Okay, so we can increase or decrease the compute capacity that is needed. Okay, Depending on the demand, it can be manually automatically and only play the specific time period a specific resource was allocated. This is also called in the market. Pay as you go, you bake for the resource is you decided to use now how cloud service providers are measuring the service is quite complex and it will be a little bit different between each one off them. But in general it will be measured using some consumption units like, for example, the amount off CPU that there are located the MoMA. We size the type off the operation system being used can be lean oaks can be windows, a location, regions, a storage type and capacity. The bend we they consumed about by the application is some a specific service level agreement between the provider and the customer, some support package and so on. Now, looking on the customer perspective, the idea and the desire is toe only pay for the ICTY. Resource is that were actually used and this is fully supported by the measured service capability in cloud systems. 15. Cloud Service Models: Hi and welcome back. My name is Dan. And in this section we are planning to learn the main service models available for cloud computing. What is the service moral? What kind of service showed I use for specific use case. What's the different between software, the service platform in the service and infrastructure in service? In order to choose the right service model or maybe a combination of service models, we must fully understand what each service model is actually offering. So let's start once all those important question I would like to remind you that you can also use the Coast dashboard as a great interactive tool to ask me additional question. You probably had that more and more businesses and today are relying on cloud services to do business. Now this trend is getting more and more momentum in their idea industry, but how those services are actually divided. So, using the National Institute Off Standard and Technology Definition for cloud computing, we already reviewed the five essential characteristic off cloud computing, including their own dimensional service, broad network access, rapid elasticity, measured service and resource pooling. Now, the next important definition off cloud computing is related to the main service models, and according to this definition, they're actually three service mortars. Let's see them on a diagram. The different kind off services that cloud computing platform provide can be grouped together into the following service model software. The service platform is a service, and last one is infrastructure. As a service, they are called as service because on one side we have a consumer that is using in pain for specific services being provided by Cloud Service provider. We can also overlay them on a pyramid structure, and together they're making something that is called the Cloud Computing stack. 16. The Cloud Computing Stack: the cloud computing stack is very useful to understand the service models. Starting with in high level definition, we can see that there are three distinct service more like that are built on top off one another. Each cloud service model provide some level off abstraction that reduced the air force required by the service consumer to perform specific activities. Infrastructure of the service is the underlying layer. Provide computing's networking and storage virtual, he sources. Using the cloud infrastructure in the middle, we have platformer the service that is used to provide a framework to develop inbuilt application on top off a cloud environment in more easy way the infrastructure, the service and on top software, the services used to provide application toe end users. When we go higher on the stack, the consumers fuel concern with developing, managing and maintaining the solution. If we go Lowell down the stack, the consumer has more responsibility and, of course, control over the solution. If we take one step back to understand the context, toe traditional I t approach and this is what we see on the left side all the building blocks in Astana. Tight environment in traditional on premise that a center organization are hosting application on their own private physical network and I D infrastructure now to be able to do that in each organization, there is an I T team that has to build and manage everything they have to install and manage the local network storage devices, multiple servers, adding village organizationally, operation system, middle ware and runtime service that the basis and multiple application, this is the additional idea. The customer is responsible for everything. Now it is time to see how cloud services are changing this model. 17. IaaS - Infrastructure as a Service: starting with infrastructures of services. This is the foundation off the cloud computing stack. You know, the first day that we saw it for such a service, provide compute power and stolen services on demand instead. Off buying and installing the required physical resource is in traditional data center organization can invent these required resource is as needed. There is, of course, a cloud infrastructure where we as end users came access and allocate. Virtual resource is to host application. Everything is provisioned manage over the Internet. For example, this is the source poli capability that is so useful in cloud computing. Here we have three end users there blue, green and orange that allocating virtually sources is needed. Now those and users will be responsible toe configure and manage. Each virtual resource is they that they are located. But they're not managing or controlling the underline cloud infrastructure. They can quickly scale up and down with demand and pay only for what they actually used. Now, looking on the same computing stack that we saw before. But now the cloud provider is responsible for the whole green part. Okay, you see, that's divided to provider and customer. The capability provided toe the consumer is to provision computing storage networks and other fundamental computing. Resource is, we can see that they infrastructure include three main building blocks networking, storage and service. And under each building blocks will find many different services that we don't see right now. For example, under networking will find the ability to build virtual network connection. I locate I'd be addresses using load balancer for traffic firewalls, domain name services, etcetera under storage, well able to find different storage options on a building to store the application data. And inside the several layer is where we can allocate virtual machines. And on top of that, the cloud provider is using some kind off village totalization. So let's say that I gave it five virtual machines using such service. Now I'm responsible to install the needed operation system, middle ware and runtime service that the bases in any relevant application. This is the responsibility breakdown between the cloud provider and the customer. Using that specific service. Who is doing what now? From a business perspective, I removed the whole complexity and expenses that are usually involved with planning and managing and maintaining such infrastructure. Now the cloud provider takes on those responsibility instead off purchasing, installing an instigating new hardware, customers can simply allocate Cloud resource is in order to build their own ICTY environment. You will agree with me that this is a major mind shift in the hiding industry where companies really use the investment in private data center and shift A the ICTY budget to a cloud provider. But this is not just about the money does. It is also related to the trust level that is needed so organization will trust an external cloud service provider when they're putting their valuable digital assets in the cloud. 18. PaaS - Platform as a Service: moving to the next service model platform with the service A platform is the services a framework allowing customers to develop land and manage application without the complexity of building and maintaining the ICT infrastructure. A pass is sometimes confused with infrastructural service, but it is another abstraction layer seating on top. Let's take a simple example. I needed database server for my application. Okay, I'm developing a new application on the Web. One option is to use, of course, the infrastructure in service allocate a donated virtual machines, installed the operation system and, of course, the database application that I need to use. Okay, this option number one. Another option is to use platform as a service. Now I'm selecting a platform that is brick configured with specific database management system, and I'm ordering that, like a single service catalog items in the background. This platform that I'm going to use can be based on multiple virtual machines. Pre configured is the one application platform. Even more important is that in such a platform is a cell vis the cloud service provider now managed the entire platform, including the operation system, needed upgrade pitches and all. The supporter actually handled by the cloud Service provider. This is what makes platform of the centre vase unique compared to infrastructural as a service. Now, the main use case for platform of the service today is actually related. TOE developed the development off a application. It is a fully managed platform environment for developers to build Web application a much quicker. So it's very popular between developers as they would like to put their consideration on developing a new application and put aside all the management and maintenance off such underlying infrastructure and live it to the service provider. And this is what we see on the right side all kinds of different developers that are using the platform as a service solution for developing new application. Now, some example off platform as a service from a well known cloud providers will be the Microsoft azure up service, a Google cloud platform A, the Google Up engines and in Amazon AWS elastic beanstalk. Looking on the cloud computing stack here, we have on the left side the platform as a service and you can see that we have morgaine layers if you compare it to infrastructure of the service, so the responsibility breakdown between the cloud provider and the end customer is better than infrastructure. The service. The provider will now manage additional Ailes, like the Operation System Middle will run time environment. Need the database Web seven etcetera. And the customers are only responsible for their specific application. And, of course, the data in simple words with such platform as a service, we can develop in host with application in the cloud without the headache off building and maintaining the underlying infrastructure. 19. SaaS - Software as a Service: software. The service or in short sass, is the most mature and popular cloud service model. Today, it is a software solution that is hosted in the cloud and accessed through the Internet. It is an on demand application delivery model operated by a Ted party provider. We can think off a sauce as a software on demand as we basically get a software for a specific subscription period instead, off purchasing it as a license. As you know, week license based software a model we need to purchase the software installed and maintain it and perform version upgrade from time to time to keep it updated, which says we just simply subscribe to the application using some package and then and user can access it online from anywhere. SAS Vandals typically offer two ways to use the application. The most common method is, of course, a Web based user interface, and this is what you see You Company A and Company B, that they are using a simple Basel to access the service from anywhere in the Internet. The other way is to use a specific set off a P I that can be used to access the service and this is what you see. Company C Jimmy is a simple example. Off software service, you logging into your email account for multiple location using simple Internet connection and consume the service. You don't care where the actual servers are located, who and how they are managed and monitored. Who just killed that you can't will be available in secured now some very known example in the market A can be salesforce and they were actually the first company offering sussed based CRM solution for Went to price customer. The famous Office 265 for Microsoft, with the office package delivered the service, the popular Dropbox for storing data in the cloud. And there are off course, endless move. Example of face off for the service application, aiming to different therapists, customers and end use. Those looking for the last time on the cloud computing stack. We have this ass on the right side. Here. It is completely the opposite. The traditional ICTY, meaning everything, is managed by the SAS provider. Now cesspool dividers have total control over the infrastructure in performance, security, privacy and much more. Now, one important this advantage is that sass solution are usually aiming toe the mass market with with genetic functionality that can be used by multiple customers. And this will introduce to some level the customization flexibility compared to a tailored software solution installed in a traditional lighting environment. Still, Suss is well accepted service model, and it's getting more and more momentum in the market. 20. Cloud Deployment Models: hi and welcome back. My name is Eden. And in this section we are planning to learn the main deployment models for cloud Computing deployment model defined, for example, where the cloud is actually located. A Who is managing the cloud Virtual resource is who owned the cloud physical infrastructure and so one. The different deployment models provide some level of flexibility. Toe, an organization that is considering to use cloud based services. Looking again on the National Institute Off Standard and Technology, a definition for cloud computing We can see below that they are actually five essential characteristic that will be reviewed three Main service mortals and four different deployment models that are the main subject in this section. Let's overlay that on a diagram. There are several flavors off cloud deployment models. We have public, private hybrid and community. I guess you him all about the public deployment model, as this is what being proposed today by the main public service provider like Amazon, Google, Microsoft and others. Still, there is no single winning deployment that is perfect for everything. Each one of the deployment models, for example, the public or the private or the hybrid has advantages and disadvantages. So at the end, each company organization A will choose the most relevant deployment options based on things like business requirement and meeting some internal policy or some immigration constrain related to security and maybe the availability of human resources that can actually manage and operate such infrastructure. Overall budget etcetera. Now, before drilling down to each deployment model, it is important to mention that the same five characteristics and the same three service models are also applicable to each deployment model, meaning we are expecting that the on demand self service characteristic will be available for any on the line cloud deployment options. Now let's out from the public cloud deployment mortal. 21. Public Cloud - Definition: public cloud is probably the main deployment model when someone is speaking about cloud computing. Public Cloud is a group of cloud services offered to the general public, meaning anyone with the carrot card can use it. You can log in to date one of the public cloud provider by opening an account and start using a public cloud service instantly. Some of them even provided freely witted budget toe play around and get familiar with system capability, something that will use in later levels. The cloud infrastructure is owned and managed by the public cloud providers. They are responsible for the hardware, equipment and software tools being installed in several data center would white. They are managing the security of the infrastructure. All kind of performance issue, hablo failure and much more 24 hours, seven days a week form a customer perspective. The cloud virtual resource is can be provisioned and managed by the end users based on the type of services they selective. This is the basic concept of public cloud out. So seeing the organization I t infrastructure and start using new types off services. Basically, a public cloud is a multi tenant environment may be heard that would move it in it. Where resource is that are available. Working in a spot of the infrastructure, I'll shared a cause multiple customer is actually a key feature off a public cloud and even for other kind, off cloud deployment, the ability to host services for multiple customers, multiple business units or department or end users on the same infrastructure in public cloud services and users pay for usage of resource is consuming only what is needed and only when it is needed. We can basically analog that to some electricity utility company that measure the power consumption each customer and send the bill according to the actual total consumption pair appeared off time. You can decide at the end to operate each electrical device in your home in specific hours so the consumption is on Lee measured when the device is consuming power. This is similar in the concepto Public Club, and we'll see that off course later, taking a simple example. Here we have four companies, or for customers A, B, C and the that are sitting on the same club vinyl, so we have a total of four tenants. Take a look on company A. For example, the blue polo they allocated five. Village Jewel Resource is in the cloud service. It provided company be allocated to virtual resources and so on. Those four companies can enjoy from something that is gold economy of scale. And when such a cloud service is sold to multiple organization. OK, the A, B, C and D and and more. All of them can benefit from the shared environment in the form off. Reduced cost, increased capability, better scaling options, etcetera. Let's say I'm owning a startup company for some a mobile application now. Today, I can use a public cloud service and instantly provide world class service without investing in a complex hardware installation. I can pay only for the sources my company consumed today. Okay, to start up, so it's probably going to go. Allowing me to tell on more cloud resource is when they are needed and also tend off resource is when they're not needed. This service elasticity is quite useful capability 22. Public Cloud Global Infrastructure: now to the next question how those public cloud service providers provide such a service. I mean, to be able to provide a public cloud service on a worldwide scale. Every cloud provider mass deploy multiple data center that will be connected using superfast networking for such a At the end, customer and companies and organization can be located in many places, and the cloud service provider must provide a great user experience, enabling toe quickly scale capacitive needed connect for multiple location and so one. If you will check specifically some cloud service provider, you will see that the services are not really global yet, and not available in every location would white. This is probably the main challenge for public cloud service provider, you know, like the giant Amazon AWS, Google Cloud Platform, Microsoft, Azure and others. They are investing huge amount off money to scale quickly into more location, and that's going to be the fight for the next few years. A who can really scale up worldwide. I took a snap shirt form Amazon AWS site where we can see that AWS operating 45 availability zones within a 16 go graphical region A around the world. We're going to learn more about that in future levels, but basically a zone is like it. Data center and re Jane can hold off course. Several data center now looking on Google Cloud Platform. They have 11 regions with tear the tree zones and over 100 point off presence. This is related to their network connectivity, and another example is Microsoft Measure that is available in the 36 regions around the world. With future plans toe add more like a six more regions Now. This information is, of course, changing from time to time, and it would be checked online from the specific provider website. 23. Public Cloud Products and Services: we l. A d lend that in cloud computing their pre service models software, the service platform of the service and infrastructural service. These, of course, in very high level, because under each service model will be able to find many types of products and services being offered by a public cloud provider. Now software services pretty straightforward and well known today. So we will focus on the cloud based services for the second to platform in the service and infrastructural Selves. If you will take a look on the major players in the public cloud computing market, they basically offer almost the same product, and service is part of their portfolio, I'm saying, almost because at the end, each provider is trying to differentiate is offering with additional product. Still, they have more than 80% common ground between them, and this is making sense as they are fighting on the same market segment. Let's review some of the very common products and services that are divided to the following categories. Compute. This is the location. A off virtual resources allocation can be done by the customer, so end users, and in that case it will be called infrastructures service. All allocation and management off resource is conveyed e done by the provider and then it will be called Platform as a service. Next category is networking. Okay. Computing resource is masts. Communicate with each other. Okay. Using virtual private network. Okay, let's similar toe routers and switches that are being used to connect between devices. Also, traffic should be balanced using all kind off mechanism like low balances and in addition to the public network, can be connected toe another private network using model. It is called VP and get way. And so one storage at the end application running on the allocated computing in networking resources that we saw in a category number one in category number two and those are application will require the capability to store and manage different type of data. Because it is another type of services being offered by Public cloud, a vision data should be backed up, restored or may be transferred to other location. If me needed into one that the bases, almost any application today, use some kind of database management system to stolen clearly data Okay, database can be like a relational database and no sequel that a base. They can use distributed big data framework like a dupe. And, of course, much more development tools are usedto help develop toe release to develop in release a program codes much faster. A artificial intelligence. This is really science fiction, but more and more services are trying to utilize such advanced capability. And in many cases, the public cloud provides some simple obstruction. Leo for utilizing very complex artificial intelligence and machine learning capabilities. A public provided are even building servers that are running on a graphical processing unit , GPU, that are used for such use case. But this is just part off the list, and there are much more in every public provider. It would be able to find additional unique products and services that are helping them to differentiate their overhaul. A offering. Let's take a quick to over the Web using Amazon, Google and Microsoft. There's an example starting our two weeks Amazon AWS. This is deciding that you see over here, and I'm going into in the menu to the product options where I'm getting quite long list off a product, but you see that they are divided toe categories. I have compute storage database networking and content delivery developer tools management tools. I am artificial intelligence analytics and so on. Many, many others. But in under each one off them, there are specific board, doctor services and injustice as an example. Amazon. Easy to this is the classical and product to create virtual machines. This is infrastructure as a service. Let's take another example from different categories. So I'm going into product and that the base this is the category and I would like a relational database. So in Amazon is called Amazon are the yes. I would click on that. Get additional information. I wasn't relational database service. This is service of yes, and it's actually a manage that of its a minute services where you can. It chews former six popular that the base engines and quickly set up a new database that goingto be managed by Amazon. And this is an example off platform. As a service, let's take our next example. Form Google Cloud. So I'm going to another website that is called Google Cloud Platform, and over there again, I have all kind of categories. I'm going to product and over here with the big surprise is divided to almost the same categories you have compute storage, database networking, big data machine learning in a P I identity in security capability, management tools, developers, tools. And so all OK, again, a long list off products and services. Some of them are similar to Amazon and some of them on special to Google Cloud Platform A. In our case, if I will compare that to a woman zones so for creating virtual machine we ever services is called Compute Engine in Google. I am if you would like to get platform as a service you wear what is gold up engine? Okay, it's written here platform as a service. Let's take another example from different category will school down a little bit and going to machine learning. And over there were true some e p I. Let's take cloud a speech, a p I. And that's a classical example. How am software can utilize the power of the cloud? Okay, the developers can convert out your toe text. Okay. A The whole brain is sitting in Google Cloud and you just provide the audio information It it bri translated to text. Okay, so you did so actually can recognize board in 110 language, and that's a very powerful capability that development can use directly form their software . Also, let's quickly review also the Microsoft Azure, a site that over there I'm going into again to product actor Goey, and I'm getting all kind off options. Some of them are things that you were already so in. Amazon and Google, like computer networking storage weapon Mobile containing that the basin. So one okay, it is a quite long legs off options, and now the under each one off them There are sub in product sub services. For example, Under Compute, we have virtual machines options, and this is similar, for example, toe a Amazon. Easy to if I will go into networking. So again, I have your options to create virtual networks, utilizing load balancing, creating VPN, get way and more and more and more options. Okay, No, it's just to just to understand, this is not really am deters overview off those a cloud provider K capabilities. I'm going to do that much in much more details in future levels, but this is just to give us some a high level understanding off what those a public cloud provider are actually providing today 24. Private Cloud Definition: moving on. So the next cloud deployment options Private Cloud. What is it, Private cloud. Okay, think about it for a second. If Cloud computing as a concept is so great and useful for public cloud, Okay, why not implementing the co capabilities off Cloud computing in the existing private data center led owned by organization and now we can call it Private Cloud. It is private because it is used by one single organization now where the private cloud can be deployed, private clouds are usually deployed on premises meaning inside the private data center owned by the organization and not the less common option is that it can be hosted by a turd party cloud provider in this data center. In both cases, the private cloud will be deployed on a single tenant environment. OK, unlike Public Cloud, that is a multi tenant environment, and this is the main idea behind private club. So private cloud is a cloud Infrastructure operated for a single organization. It is not available to the general public like we learned about Public cloud. Now inside a specific organization can be, of course, multiple business units, departments or end uses that can use this private cloud infrastructure. Now who should use such private clouds? Well, private clouds are good for large organization that they have significant existing that a center us it and they want to move forward into cloud technologies. If you're l. A be walking in the acting industry, you making toe yourself. What's the different between vehicle own premises private that are center toe, this new private cloud concept? And that's a good question we would like to answer. The easy or simple way to approach it is by considering Private cloud is the natural evolution off traditional data centers. Many companies are already visualising their ICTY environment for several years now. Nothing new here. Visualization provide additional cost saving benefit Aziz well as enhance flexibility to ongoing new demands. And the private cloud is taking this existing virtualized infrastructure toe the next 11. A new level well resource is can be allocated by users an application in more automated ways, for example, using a user portal to allocate resources without calling anyone from the I T department, using out of scaling features to respond to increasing or decreasing demand. A former 90 perspective, a private cloud offers the key advantages off a agility, speed and efficiency while maintaining control of their off sensitive war clothes that are running on the data center. Now let's review some of the key benefit in drawbacks off private cloud. 25. Private Cloud Key Benefits: business agility. Private clouds enabled the ICTY team inside an organization to be more responsive to business and to walk more effectively with end users that require such idea. Resource is the I T came. Provide better service, monitor demand and maintain control of sensitive war clothe. And resource is from usual side user can benefit form quick access toe the required capacity, and this will, of course, accelerate the ability to go after or kind of internal and external short term opportunities or kind off initiative. With the private cloud supporting self provisioning capabilities, User can be up and running in hours or even minutes with minimal interaction with the I. T. T. And last thing is that moving to cloud architecture will also establish a foundation for new type of services, accelerate innovation and promote cloud aware application designed principle for developers that are walking inside organization and other key benefit. While considering private clouds compelled to public cloud is related to security, private clouds can deliver a higher level of security and privacy. That's because private Cloud is not available to the general public. Okay, it's only being used by one organisation. All the sensitive data is told and handled internally, Not really hosted on a Ted party provider. Now, looking on this diagram, we have the inside and the outside. Physical and virtual security perimeter off some organization. The private cloud is located inside clients or user can access the private cloud within the loud security perimeter. Outside users can access the private cloud while crossing some something that called boundary controller like a firewall, VPN and etcetera. This is probably a major issue for many companies considering toe migrating toe public cloud private clouds reduce some off the glittery risks around data ownership, privacy and security due to the fact that this is a single tenant deployment model. Now, one important remark about that saying that the private cloud is more secure than a public cloud is not always true. Okay, just to give you one example lot all organization are very good in keeping them data secured. They don't implement the needed state off the art security technologies. They don't hire the base security experts. They don't morninto the system as they should etcetera On the other end. Public cloud providers will do all those things because this is their business. They will lose customers if the data and application will not be secured enough. So which options is more secured, private or cloud? As a simple exercise? Think about it a little bit more, and I will be happy to hear your personal opinion in the course. Dashboard. The dead benefit is related to more control. More control over the infrastructure. OK, the organization can decide which hard will vent vendor toe purchase. What kind of security were level will be used. How many people we manage this complex infrastructure. How maney, how user We provisioned new services, what will be the system up time requirement and so on. Basically, the organization owned the infrastructure and can fully control how application will be deployed on top of that, if we compare it toe public clouds, public clouds offer a standardized services to a very large amount off customers, and therefore it will be more limited. Toe may special customization. Now, private clouds are typically more flexible. Toby customized because they are dedicated to an owned by one organization. So the ability to customize the private cloud solution is very useful. To meet specific organizational, a requirement related to security operational process, a financial requirement on all kind of other unique things. In simple words, we own it so we can customize that as we want to capital investment. Okay, this is related to money. Of course. In Public Cloud, we learned that we pay the current cost pair our usage. Okay, We use more, we pay more. It is operational expenses. Okay, It's not there, you know, yearly budget. And this is a major mind shift. How Organization Consuming bay for ideas, services. And if we compare that I mean, on the left side, we have capital expenses, a related to private club because private cloud is similar toe regular data center. You need to invest in ICT infrastructure. And of course, there is also additional professional expenses to operate such a private cloud. Or but on the right side, in public cloud, we're shifting everything toe operational expenses, OK, because we're not managing the infrastructure anymore. We're not buying new hardware. Okay, Now, some organization are not so keen to shift capital investment to operational expenses and that's okay. Okay. Is always in life. Nothing is one or zero. It is case by case eso by using private cloud such organization can keep leveraging capital investment like they have done for many years using traditional data center. As always, nothing is perfect and private clouds are not a so good solution for all cases. Let's review some of the drawback off private cloud so private cloud should be claimed, installed and operate by the organization. Like any traditional I d. That percenter. So there is substantial up front money investment, and that is needed toe build such infrastructure. And, of course, the Opara don't going operational. Cost for managing and maintaining such clouds is them similar toe traditional data center. And this is remove the benefit off pay as you go model that we have in cloud in public love because and user led paid for the infrastructure, whether we use it or not, Next thing is limited scalability. Let's get real for a second private cloud can be scaled only within the capacity off. The internal shared pull off resource is we decided toe purchase in advance in advance. Of course, most organization can't really compete with public cloud provider that are building infrastructure. You know, we're in a global scale. They have almost unlimited greed off computing resources that are available instantly in different geographical location. And just it is a simple example of private Cloud is not good a feat for a Web based application being used by multiple users located worldwide that would scale up and down according to New A traffic Parton's If you need Global Presence, 24 hour seven support some very extreme scaling capability and then public cloud based offering maybe a better choice than going into a private club. And the last thing that really discussed is that in many cases, private cloud could be less secured than a public cloud service because at the end, not all organization are following the best practice in security. And they're not using, you know, the best expert in the field off security or the best technologies that are available. 26. Hybrid Cloud: hybrid club. Okay, the cloud doesn't exist in isolation with other cooperate ICT investment. And no one said that an organization a shrewd or must select only one single solution. Public cloud or private cloud. In reality, many organization today leverage both public and private clouds. This is the basic concept off hybrid cloud cloud solution that is actually a mix of different cloud deployment that are integrated together somehow to form a combined I t infrastructure. So here in this example, we have a private cloud being managed by Company B at the blue polo on the left side. In addition, this the same company this company allocated resources and services formative party, public Cloud provider. And now this is the Gin cola on the right side. Users from Company B can now utilize Resource is from the local private cloud and in parallel form, the public cloud. And in that case, we goat in yellow. The hybrid cloud, the cloud that is based on multiple clouds, most organization that are using private clouds and likely to evolve into the direction into such hybrid cloud model. So this mother is going to be a very popular options in the future. One very useful scenario for hybrid cloud is called cloud bursting in case off spikes in demand. Where users or application required to scale computing resources that are behind the private cloud capability, they can keep scaling toe the public cloud. The public cloud is acting as an extension off the organization that on center, and we can create virtual machines on demand and remove them when theyre not longer. And neither looking on the following example What you see on the left side, let's say we have a specific application workload learning in their private cloud. Now the application. Create a dynamic workload based on usage. Parton's and it is expected that this hybrid cloud will be able to scale up and down is needed. So on the left side, we have the application workload. Okay, starting from some level and then we have a virtual machine allocated on the private cloud on the right side. If I have the same application war clothes, then I don't need a new in a virtual machine on the private cloud. But as soon as I have growing demand on the application war clothes, I may need additional vehicle machine in the private cloud and this is going to keep going . Now there is a limit I can in my private cloud. I can provision upto three virtual machines. And from that point of time, I'm start using a virtual machine that is coming from the public cloud Resource is okay. I need another virtual machine. Um, I locating another one. Now it's keeping the same application war closer. I don't change anything. As soon as the war clothes is shrinking, then I can release one virtual mission from the public cloud and then release another feel transmission from the public clouds. This is a simple example. A classical example off cloud bursting in hybrid cloud where I can use the resource in my private cloud and extent the workload into the public cloud, as did it. 27. Community Cloud: If you remember, we have four different cloud deployment options, and this is option number four Hume Unity Cloud. And that's the last one. A community cloud is like collaborative effort in which the cloud infrastructure is shared between seven organization with some common concern. It can be related to security, maybe compliance. Requirement the physical location off the data center. A kind of regulation constrain, etcetera. This is why it called community. A community is usually a specific vertical industry. For example, here we have the government intelligence community. Okay, that's one example. Or the health care community. If you will take the government intelligence agencies there probably sharing a specific concerns, a special needs and requirement. And they cannot really use the generic public cloud service a being offered to everyone form Public Cloud provider. They need something that is more tailored, so it is only logical that Cloud provider will try toe offer such they load solution. Four different market segment. Still, it was very hard for me to find real market examples off community cloud. So my assumption is that this is not going to be a major deployment options in the future 28. Cloud Computing Management Platforms: toe build and operate private clouds whole a hybrid clouds. We will need something that is gold Cloud computing management platform off course. If we are only using Public Cloud is a service, then this management a platform would be provided by the public cloud provider. But if you would like to build something by ourselves, then we need such system. A Cloud Management is the management off cloud computing products and services. Such tools are used for creating virtualized. Pull off Resource is providing a self service portal for end users, and they'll a resource allocation monitor performance, tracking and billing the usage. And then you can build internal and external users and much more. Cloud management tools provide at the basic level the ability to manage a multiple platform and the complex I t infrastructure form a single point off reference. And then we get unified management layer. They are quite going amount off cloud Computing management platform. Some of them are commercial off the shelf software solution, while others are well known and maintained open source platform. Selecting the best cloud management flood platform for specific cloud environment. It depends on the all kind of things, like the underlying visualization involvement that is being used all kind of business requirement, the specific solution capability. A availability off skilled resource is to manage such systems, its support and, of course, the cost off using a specific system. Okay, that's all for the section. I hope it was clear and interesting is always Please use the course dashboard to ask a question or at some interesting opinion or some experience you already f please use the following quiz to test your understandings. Thanks for watching so far And see you again on the next section. 29. So, Why using a Public Cloud Service ?: Hi and welcome back. Until this point, we land and reviewed the main characteristic self cloud computing at trees of this model is standing in the last section recovered before a cloud deployment options. Hey, I hope everything was clear until this point. And if you have any question remark and some important suggestion, please use the course a baseboard it. So why using a public cloud service all around us, we can hear that moving mortgages ation Facing this question whether this is the right way to go, what are the main benefits related to public cloud services? He is not only related toe cost reduction or there are specific technologies operation advantages that can be translated to some business edge. I assume this question really running in your mind, and it is good time to discuss them one by one. 30. #1 - Easy and Dynamic Scalability: starting from the first key advantage or benefit. While using a public cloud service is easy and dynamic scalability, public cloud providers are using really mega scale data centers and networking infrastructure on a global scale. Okay, a looking like unlimited resource is now off course. Anything is limited at the end, but former particular organization that is using the cloud service. This is like unlimited pull off. Resource is we can scale up by using more powerful computing notes or scale out by eating. Move notes into a distributed a plaster. And everything is on demand when we need it to support fluctuating a new evolving Parton's off workload. It Oh no, we're application innovation. It is quite easy. It can be done using a Web consul, a CLI consul, all kind of development tools and dedicated way baby eyes. Users can scale services, customized application, perform configuration and access cloud services from anywhere with a simple Internet connection. And last thing related toe dynamic Scalability is automation. You can automate the scaling in your system by setting condition, monitor and detect over utilised or underutilized resource is and adopt. The system is needed. Easy and dynamic. Scalability is a powerful advantage related to public cloud service 31. #2 - Economies of Scale: second benefit is economies off skill. Let's on a look that to electrical production and consumption. Technically, each company can build a small skill power station and produce electrical power for internal usage. Sure, that possible, but it's not really making sense. For for most companies, they prefer to buy that form a utility company and pay for ongoing power consumption. Now the same concept is true to some level for ICTY infrastructure like that A centers instead of building and maintaining it data center, it can be provided by external company like a public cloud provider. Imagine that 1000 off customers around the world are using a specific cloud provider. Now this club service provider can better utilize physical computing, storage and networking. Resource is for those customers, reduce energy consumption and reduce maintenance over it. This is basically the idea with economies off scale, the cost advantage pair unit, wit, the increased output off units, Cloud service provider can enjoy operational efficiency and small customers are joining the cloud services. They can invest more in technology innovation and and managed this mega scale data center much more effectively than single organization. Now form a customer's perspective. Now they can better focus on their core business technology and human resource is reduced overall cost. And more importantly, they can response much faster to new challenges and new demands. Without wallowing toe the underline i d infrastructure and the last one is powerful world class infrastructure for everyone. It doesn't matter if you are a small company or a giant enterprise, a organization. In both cases, you're sharing the same level off access to such make a scaling for such a so that's basically in advantages for a small and medium sized companies. 32. #3 - Capital and Operational Costs: saving money is probably one of the main reason that companies are looking on cloud services. There is still the big debate. If public cloud services are at the end really helping to save money, Dancel is something in the middle. In some cases, it will save money, and in other, it may be more costless solution. When looking on the long gun, it still Cloud service provider are constantly adapting the pricing model and to make those services a much more attractive for more and more use cases. And we need to remember that money is not the only reason why companies are looking for cloud services. But definitely this is an important factor. Let's review some of the main money related things around public cloud computing. In the previous chapter, we saw that a. The public cloud is provided as utility service like electricity, and it is based on utility pricing model. You can pay as you go paying for what is needed right now, paint computing storage traffic volumes of any other consumption unit. Let's take a simple example. You have a new project and you need some testing servers for a short time. In that case, you. You can allocate that form a public cloud provider under testing for, I don't know, two days, three days, and then tell down the servers all that with the cost. A few dollars. Basically, we're shifting yearly capital expenses in I t infrastructure. Two monthly operational expenses. Many software as a service solution being used by many organization today on led based on that approach, but not just that. Such operational expenses. It can be reduced and optimized. For example, by utilizing standardized services, a company can reduce overall risks. Reduce planing an implementation over the ongoing system. Maintenance. A costly customization integration efforts, etcetera. Okay, the simple example. A company can use some a several image or package off software. A provided a disservice that can be tested by the cloud provider and probably being used by many other customers. So basically it is more stand arised than any payload or customized software package. In addition, the operational costs associated with cloud services are valuable. Okay, is there based on well consumption? Looking, for example, on a particular month is this time interval resource is can be scaled up and scale down is needed. So basically the monthly payment will be valuable according to the actual usage on that particular month, and the last one is less capital expenses when moving to operational expenses. There less long term financial commitment. We don't need toe by anything. They're less up front expenses on a IittIe like purchasing servers, storage a capacity software licenses, you name it. Basically, we are renting instead of buying. Now we need to be careful about that because in some cases, investing in I t infrastructure OK using capital investment for a long period will be less costly, then paying months after months for a period of time, let's say, five years. This is also called a TCO total cost off ownerships. This is why a cloud service providers air providing some pricing calculators, helping toe estimate a the cost and compare that toe a private data center. You're more than welcome Toe open. Microsoft are Amazon Google of any other cloud provided toe. Take a look on the pricing, a more 33. #4 - Increased Reliability: benefit. Number four is increased reliability in traditional 80 organ one organization is usually used one or two data centers with several high availability options implemented in critical component. Oh, maybe use another own premise that a center in different geographical location for disaster recovery This is the common practicing in i T. When we go to Public Cloud service providers, they're using global scale cloud infrastructure, enabling us to implement a system in multiple locations, a load balance, traffic automatically and direct traffic request. Live toe the end users helping to reduce the overall performance impact on the system. So in that case, a public cloud is much more distributed than any private cloud. In addition, Cloud service providers are obligated to certain S L A service level agreements. Now, in case they're not fulfilling the promise. Tercel A. They will pay penalties, but not just that. Cloud providers are constantly fighting with each other to achieve the highest cloud. Availability is they are breeding the company reputation for cloud services. So all those things are great. Motivators for cloud service provider toe keep the cloud infrastructure in a great shape 34. #5 - Business Agility and Speed: number five Business agility and speed. He's probably one of the most important value proposition off public cloud services. As an example, let's say we have some Web startup company and over the last two months we had, like, a 50% growth in traffic and the amount off users and assigning to our Web service is keep rising. Now that's a great news. But our servers, owned and operated by us are not holding this capacity demand. And now we need to upgrade the whole system. How long it will take us toe designing, you see, this time taking into account future growth and then acquire installed they needed. How does in software and so one. If we own the ICTY infrastructure, then we will probably be less agile, less flexible and adaptive to things that are constantly changing. Now, by moving to a public cloud service, all those issues we disappear. We will be able to quickly adapt to changing business needs, and it used the time to market new products without costly up phoned investment in ICT infrastructure that is based on a forecast and prediction. A getting the ICTY resource is we need when we need them will help to provide better services to our customers, deliver project more quickly and in more predictive a time. In addition, it will be able to focus in our core business instead on our well, I t infrastructure. Redirect. I will focus, too product and service innovation enabling the businesses itself. Toby more elastic And you know, some going amount of companies toe they are actually using the cloud in the public cloud is the business competitive edge. They're utilizing the power off public cloud service that available for everyone shift and better used human resource is that are the main asset in the organization, allowing people to spend their time on other, more useful activities that may offer greater value to the business. Innovate faster because we don't need to first set up infrastructure before we can develop in delivered application toe, their organization can quickly allocate ICTY Resources for different are in the initiatives all kind of experiments and development project with very low cost. Imagine that you're a software programmer in the company and you would like to test some interesting new feature as quick as possible. All you need to do is open an account in some public service provider. Allocate the needed resources, performed the testing and remove the set up. When you finish and last one is scale globally in our so even minutes, we can easily deploy an application and multiple regions around the world with just a few months clicks. All those things are leading to the business agility and speed that is so critical, eh? For the digital business transformation. 35. #6 - Yes, Security: number six is a little bit surprising statement. It's saying that Public Cloud is more secure than a private cloud over a private data center located their own premises, actually, one off. The reason that private cloud is considered a better solution compared to Public Cloud is because the organization date eyes located on premises inside organization and not off premise in some unknown location. I know many people assume that the public cloud is not secured is a private that assented over private cloud. Let's challenge that for a second. Let me ask you a question. Do you really think that most companies can really match the security capabilities off companies like Google, Amazon and Microsoft? This giant are really good with what they're doing. They have the knowledge experience resource is and visibility a compared to any single small organization around the world. If you will check the Web, you will be able to see that Cloud service providers are using an offering state off the art security technologies like access management tools, certificate managers, key storage and management, a Web application, fire World B nine off service protection, all kind off audit reports that being used by auditors or the graters to match a specific security certification, and some of them are even manage dedicated 24 7 security centers. But at the end, those a cloud service providers are providing tools, and those tools can be used in a smart way to reduce overall security risks or not. Eso yes, public cloud services can really help with your security risks, but that's also depend on how good those services are implemented and being used. 36. Course Summary: Hi. In a welcome to our final section, I would like to have a quick recap on the key concept We live so far and discuss a little bit about your next. A step my men target in this course was to provide the fundamental knowledge and understanding around cloud computing. We started with traditional 80 meaning the famous model that is still being used today to plan a buy and operate all the I T infrastructure and specifically data centers where some of the application of sitting the organization must invest in hardware and software. Ongoing upgrade, maintenance, support, customization, of course, manpower. The next step was to define the concept off application workload as a basic way to measure the load created by specific application on I. T. Resource is helping toe find under and over utilised Resource is. Then we discussed about visualization a technologies being added it to the data centers as part off the ICTY evolution process, making the I T infrastructure more effective and more flexible. Suss softer. The service was the first cloud based services that emerged in the consumer market and then slowly moved. Also toe the business market application in data are sitting somewhere in the cloud managing operated by someone else, and we, as end users are getting online access from any location worldwide. Then we discussed about the digital transformation many organizations are trying to achieve , and the demand for technology is helping to move in. That direction is keep going, and the digital business model is basically more and more data centric. Everything is around data. In that scenario, the main value proposition off cloud computing implemented in hyper scale data centers, is to provide an abstraction layer to super complicated technologies being used in the cloud and provide new type of services that I needed for companies to take advantage and help them while going this digital transformation. Today, cloud computing is considered as a catalyst for innovation. It because it is completely changing the i T industry, transforming the basic business models a that were used for so many years. The adoption rate is going big companies started to embrace. It is a strategic decision to focus on their core business and utilized the power off cloud services. If you can't fight it, join it. Looking a little bit into the future. Artificial intelligence is the next evolution Off cloud computing The big players are putting a lot off, aren't the resources in the direction, and we'll see more and more services that are based on artificial intelligence technologies , making them available to the general a public. We started to define cloud computing in more details and according to the official definition of cloud computing there, five essential characteristics off cloud computing on the mend Self service is a major mind shift in how computing resource is should be provisioned. Instead off manually contacting cloud service provider or maybe the I T team In some organization for allocating resources or changing specific configuration, consumers or end users will be able to perform most off the activities by themselves with minimum human interaction. The cloud computing services should be accessed using a standard metal connection for me multiple location and form a wide range off endpoint devices. Resource polling is basically the ability to use a pool off resource and by multiple end users, customers and consumer. This is why clouds are basically a multi tenancy systems. We learned that a key feature off a cloud solution is to provide elastic environment, and in that sense, rapid elasticity is the ability to quickly scale up in down services where resources can be quickly changed, expanded or reduced depending on demand. The last important characteristics, say off cloud computing is measured service. Basically, the old business model Off Cloud Services is based on renting a particular service for a specific time period. This is also called pay. As you Go you pay for the resource is you decided to use. We also learned that the different kind of services that cloud computing platform provide can be grouped together into the following service model a sauce after the service pass platform is the service. And if a such a service, they all called is the service because the consumer he's using and bang for a specific service being provided a by a cloud service provider. In addition, we analyzed each service model using the cloud computing stuck a looking on the breakdown off responsibility between the customer and the cloud service provider. It's part off. The last step to define cloud computing reviewed the four cloud deployment models, public, private hybrid and community. A public cloud is available. 21 is the service and the cloudy for centuries owned and managed by the public Cloud Providers. Resource is available in the cloud of share the course, multiple customers and end users. Private Cloud is a cloud infrastructure operated for a single organization. It is not available to the general public and usually deployed inside a private data center owned by the organization. A. Private clouds are good for large organization that led ever significant existing data center asset, and they want to move forward into cloud technologies. Many organization today leverage both public and private clouds. This is the basic concept off hybrid cloud, a cloud solution that is actually and mix off different clouds, the deployment that are integrated together somehow, and to form a combined idea infrastructure. We saw that one very useful scenario for hybrid cloud is called a cloud besting, meaning the cloud. The public cloud is acting as an extension off the organization, a own data center, and the last one was Community Cloud that is like collaborative effort in which the cloud infrastructure is shared between several organization with some common concern or common requirement. The next levels in this training program are going to focus on public clouds, and that's the reason we covered some of the key benefits off using a public cloud service , starting with an easy and dynamic scalability scale. Up and down, out and re sources is needed many really automatically. We can automate the scaling by setting condition, monitor and detect over utilised and other underutilized resource is and adopt. The system is needed the concept off economies of scale, meaning the cloud service providers can enjoy operational efficiency. Aziz More customer using the cloud service and they can invest Maurin technology Innovation . Saving money is one of the reason why companies are looking on Cloud Services and Public Club. We were using pay as you go pricing model pay for what? You're what you need right now as long as you need it and shifting yearly capital expenditure toe operational expenditure. Next, we discussed about the increased A liability when those public service provider can distribute data, an application and multiple location and provide a service commitment. Business, agility and speed is probably one of the most important value proposition off public cloud services. How organization can innovate in the digital age more quickly and more effectively, and the last one was about security, where many people used to assume that the public cloud is not secured as a private, the data center. And we challenged that a little bit. Okay, this is a will cause Rick up with the quick summary of what we learned s so far.