Xamarin is a framework using the C# language for developing cross-platform applications (for iOS, Android, Windows).
Xamarin allows you to create one single application logic using C# and .NET for all three platforms - Android, iOS, Windows.

Xamarin Applications contain an execution environment Mono.
When the Xamarin application is launched, the Mono runtime translates the compiled C# code into operating system commands (iOS or Android or Windows).

Benefits of using Xamarin:
• During the development process, a single code is created for all platforms
• Xamarin provides direct access to each platform's native APIs
• When creating applications, we can use the .NET framework and the programming language C#, which is quite powerful, and at the same time clear and easy to learn and use

Functionally, Xamarin represents:
• Xamarin.Android - library for creating Android applications
• Xamarin.iOS - library for creating iOS applications
• Xamarin.Windows - library for creating Windows applications

Для разработки приложений на Xamarin нужно установить Visual Studio
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