The development of mobile applications for all platforms is more important today than ever before. If you are developing "native" applications, you have an option to develop for each platform separately, or use a tool for developing Multiplatform applications. With the latest version of Xamarin, you have no more reason to develop separate native applications since the development process and maintenance makes it longer and more expensive. In this session will be see Xamarin as a tool to complete multiplatform development with Visual Studio 2015. You will see how to create a simple application, but also the structure and architecture of a complex mobile applications. You will see a variety of development technologies, MVVM, offline mode for connected applications, differentiating platforms in XAML and C # code, testing with simulators, and finally the implementation of applications to the store. Through the session will have the opportunity to see live all of the above. Xamarin potential as a platform for future development Multiplatform applications is confirmed by a recent Microsoft acquisition of Xamarin, which made Xamarin become an integral part of Visual Studio with a tendency to become the standard for development on all mobile platforms.