Finally, since we are talking about Xamarin, it is important to mention that Xamarin and/or Xamarin.Forms do not bind the developers onto Android and iOS phone or tablet devices. By using Xamarin and Xamarin.Forms, developers can target devices, varying from simple wearables such as smart watches, to IoT devices and home appliances.
When developing applications for iOS or Android-based appliances, exactly the same toolset can be used, while more specialized platforms (such as Tizen) can constitute a target platform, given that the .NET Standard implementation exists natively:
https://developer.tizen.org/development/training/overview#type / [CC BY-SA 3.0 (https://creativecommons.org/licenses/by-sa/3.0)]
Tizen implementation is also a nice example of .NET Core being used by Xamarin.Forms and the Linux kernel.