In this series on developing an effective retention strategy, the focus is on using data to create a smart and scalable retention motion, with the aid of downloadable worksheets for practical application. The first step involves establishing Active Usage Metrics to identify actions that yield business value, and this leads to the construction of a "Metrics Tree." A Metrics Tree is a visual tool that maps relationships between business KPIs, showing how user actions impact overall business goals, such as revenue. It helps in making data-driven decisions by breaking down critical outcomes into component metrics and user actions, thus clarifying which interventions might improve product success and retention. The process involves identifying key metrics in five core areas: breadth, depth, usability, frequency, and sentiment, allowing businesses to understand user engagement and satisfaction. By building a Metrics Tree, businesses can see which actions have the greatest impact on retention and overall success, enabling them to make informed decisions on product improvements.