Sundar Pichai oversees Android, Chrome, and Google apps as SVP of Google. Over 850,000 Android devices are activated every day. Android is a Linux-based mobile operating system combining software stacks like the OS, middleware, and key applications. It uses activities for single screens, intents to move between activities, content providers to share data between apps, and broadcast receivers and services to run in the background. Developing Android apps requires the Java Development Kit, Eclipse IDE, Android SDK, and Eclipse ADT plugin.