The Amazon Mobile App SDK provides APIs that allow developers to use Amazon services to help build mobile applications. The tools include:
In-App Purchasing API: For offering digital content and subscriptions for purchase within apps.
Amazon GameCircle API: Makes Achievements, Leaderboards and Whispersync services accessible in-game.
Amazon A/B Testing Service: For experimenting with different in-app experiences.
Amazon Maps API: To add interactive maps to apps for most Kindle Fire tablets.