User onboarding is essential for product success, ensuring that new users understand the product's value and are equipped to explore its features further. Product analytics plays a pivotal role in this process by providing insights into user interactions, helping businesses refine their onboarding strategies. Key metrics such as time to value, product adoption success rate, retention rate, funnel analysis, active user metrics, churn rate, user support request rate, response time, and survey responses are critical in evaluating and improving user onboarding. By tracking these metrics, businesses can identify areas for improvement, enhance user experience, and ultimately increase customer retention and satisfaction.