In this session we’ll have a look at the Xamarin tools to develop cross-platform mobile apps with C# and .NET, focusing on the the architecture and best practices to develop once and deploy on Android, Windows and iOS. We’ll have an overview of Visual Studio and Xamarin tools to design cross-platform UI (based on Xamarin Forms) and we’ll go a little deep on the optimal architecture to adopt (MVVM and other design patterns) to enable code sharing and reuse between Android, iOS and Windows, analyzing a sample native application with cloud backend/API.