Setting up precise KPIs (key performance indicators) that are in line with corporate objectives is important when using data and analytics. Metrics like ad eall slots nzngagement, conversion rates, average revenue per user (ARPU), and retention rates can be examples of this. App developers can learn a great deal about user behavior & app performance by monitoring these KPIs over time. Optimizing different aspects of the app experience also requires experimenting and A/B testing.