Before Windows Phone8.1, the Windows Phone app was Silverlight-based, and the code could not run on Windows, from Windows Phone8.1 start, developers have a choice, is to develop univeral applications, that is, a code, can be run on Windows, but also run on Windows Phone. In fact, Windows Phone adds Windows Runtime, and the system library is designed to take into account the phone's UI. So the previous app called the Windows Phone Silverlight app, now called the Windows Phone WRT app. Silveright app 1:30 will not be canceled, so you can still safely develop Silverlight apps, but if you want to run on windows, then maybe it's time to think about WRT. The following article has been introduced
http://blogs.windows.com/buildingapps/2014/12/17/ Bring-your-windows-phone-silverlight-apps-to-windows-runtime-xaml-prepare-for-universal-app-development-in-windows-10 /
Windows Phone Silverlight App is widely used panorama or PIVOT,WRT does not provide panorama, but provides the hub, according to the article http://msdn.microsoft.com/en-US/ Library/windows/apps/dn800286.aspx (This article lists sivlerlight and WRT common classes of mapping, so if there is any concept is not clear, can be found here), the Hub is the equivalent of Panorama.
Windows phone development needs to understand the background