The primary role of a product manager is to oversee the development and success of a product throughout its lifecycle. This involves defining the product vision, strategy, and roadmap, collaborating with cross-functional teams, gathering and prioritizing requirements, and ensuring the product meets both user needs and business goals. Product managers act as a bridge between various stakeholders, balancing customer feedback, market trends, and technical considerations to guide the product to success in the market. They play a crucial role in aligning the product with the overall company objectives and ensuring its continuous improvement and relevance.