When establishing success metrics for a new feature, my first step is to comprehend its anticipated impact and objectives. For instance, if the feature is designed to enhance user engagement, I would prioritize metrics like session duration, page views per session, and bounce rate. Conversely, if the objective is to boost conversion rates, I would track the number of sign-ups or purchases made following the feature's launch. For the implementation phase, I generally utilize project management tools and analytics software to monitor these metrics over time. After the launch, I analyze the gathered data to determine whether we have achieved, surpassed, or failed to meet our goals. This analysis is crucial for refining our strategy and making necessary adjustments for the future.