Here is the complete project translated and adapted into professional business English, ready for your course submission:

1. Data Collection Fundamentals: From Basics to Insight

In GA4, the core shift is moving from "Sessions" to an Event-Based Model.

• The Mechanism: Every interaction (a click, a page view, a scroll) is an Event. This allows for a much more flexible and user-centric measurement.

• Implementation: Data is collected via the Google Tag (Measurement ID). For a professional setup, using Google Tag Manager (GTM) is essential to capture custom events without constantly modifying the website's source code.

2. Traffic Evaluation and UTM Parameters

To grow a business, you must know which investment (time or money) is actually yielding results.

• The Role of UTMs: These are tags added to URLs to "tell" GA4 exactly where the traffic is coming from.

• Evaluating Sources: In the Traffic Acquisition report, we don't just look at the volume of users. We evaluate the Engagement Rate and Conversions. If a source brings high traffic but zero conversions, the content strategy or audience targeting needs immediate adjustment.

3. UX, Site Content, and Mobile Experience

This is where we analyze if our "digital storefront" is properly designed to convert.

• Site Content: Using the Pages and Screens report, we identify pages with the highest Average Engagement Time. If key sales pages have low engagement, the message isn't resonating.

• Internal Search: By enabling Enhanced Measurement, GA4 tracks what people search for in the site's search bar. This is "business gold": if many users are searching for a service you don’t yet offer, it’s a clear signal of a new market opportunity.

• Mobile Experience: A slow site kills sales. We must cross-reference performance data with the Device report. If the conversion rate on mobile is significantly lower than on desktop, there is a technical bottleneck that needs urgent resolution.

4. Advanced Techniques: Segmentation and Funnels

Segmentation allows us to stop looking at "general data" and start seeing "real people."

• Audience Segmentation: GA4 uses AI to identify users with a "Purchase Probability in the next 7 days. Creating a segment for these users allows for ultra-effective remarketing campaigns.

• Funnel Explorations: We create a Path Exploration or Funnel Exploration to see exactly where users drop off:

  • Step 1: Home -> Step 2: View Service -> Step 3: Contact Form -> Step 4: Lead Submission.

  • If 80% of users leave at Step 3, the issue isn't the marketing; it’s likely the form is too long or the call-to-action is unclear.