Explore strategies for developing Android apps that cater to billions of users worldwide in this Google I/O 2016 conference talk. Learn how to create applications that function effectively across varying levels of connectivity, device capabilities, data costs, and commerce. Discover the "Building for Billions" framework, designed to help developers provide exceptional experiences for both current and future Android users globally. Gain insights on optimizing network usage, creating useful offline experiences, adapting to different screen sizes, managing memory and storage efficiently, ensuring backwards compatibility, reducing APK size, minimizing data and battery consumption, designing fast and responsive UIs, implementing UI best practices, localizing content, and considering local pricing strategies. Use the example of Kingdom Rush: Frontiers to understand practical applications of these concepts.