Developers have invested in app ecosystems since 2010. Google bought AdMob in 2010 and rebuilt the platform on Google's stack, creating a powerful platform. The platform aims to maximize ad revenue and in-app purchase revenue while understanding users. Only a small percentage of users typically make in-app purchases. The platform combines AdMob and Google Analytics to be a single Google destination for app developer monetization, promotion, and analytics needs. It uses in-app purchase ads and audience segmentation to find premium users and encourage purchases, taking action before users abandon a game.