Data is used in product management in a few different ways. First, data can be used to track progress towards goals and objectives. This data can come from a variety of sources, including analytics data, user feedback, surveys, and more. Additionally, data can be used to inform product decisions. This could involve anything from customer segmentation to understanding which features are most used (or most important to users). Finally, data can be used to help measure the success of a product. This data can come from a number of different sources, including A/B testing, user engagement data, and more.