This document outlines a 5-step process for choosing the right third-party tools (SDKs) for a mobile app: 1. Create a list of needed SDKs based on the app's requirements like monetization, analytics, and performance. 2. Use a marketplace to compare SDKs and narrow down options by eliminating low-rated or unneeded SDKs. 3. Ensure SDK quality and behavior using in-app controls to monitor SDK performance in real-time. 4. Evaluate which SDKs provide the best cost-benefit and user experience by talking to developers about issues. 5. Periodically revisit SDK decisions to ensure they still benefit the app and users without new problems.