Windows Phone 8.1 introduces new mechanisms to allow applications to execute while not in the foreground. A converged Triggers and Background Tasks implementation allows tasks to launch on time, location, push, Bluetooth and system events. Learn how new resource policies affect how and when your application runs in the background and how to use these new feature from Windows XAML and Microsoft Silverlight 8.1 applications.
Using the new tools included in the Windows Phone 8.1 SDK, it is easier than ever to create apps that share most of their code. Code can be shared using the new shared app template in Visual Studio, as well as by creating Portable Class Libraries. This session walks through the development of a shared app, showing you where code can be shared and where it still makes sense to implement platform-specific features.