Explore the fundamentals of mobile development using Xamarin in this comprehensive conference talk. Learn how Xamarin leverages .NET developers' existing skills with Visual Studio and C# to create native mobile applications for iOS and Android platforms. Dive into platform foundations, app lifecycles, and essential components for both Xamarin.iOS and Xamarin.Android. Discover the project structure, including platform-specific projects and .NET Standard projects. Examine key elements such as the Android Manifest, layouts, and activities for Android development, as well as storyboards, view controllers, and segues for iOS development. Gain insights into device testing, unit testing, and the strengths and weaknesses of the Xamarin framework. By the end of this talk, acquire the necessary knowledge to begin your journey into mobile app development with Xamarin.