Version 4 (V4) of the Amazon SDK for .NET has been released\!

For information about breaking changes and migrating your applications, see the [migration topic](https://docs.amazonaws.cn/sdk-for-net/v4/developer-guide/net-dg-v4.html).

 [https://docs.amazonaws.cn/sdk-for-net/v4/developer-guide/net-dg-v4.html](https://docs.amazonaws.cn/sdk-for-net/v4/developer-guide/net-dg-v4.html)

# Special considerations for Xamarin support
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Xamarin projects (new and existing) must target .NET Standard 2.0. See [.NET Standard 2.0 Support in Xamarin.Forms](https://docs.microsoft.com/en-us/xamarin/xamarin-forms/internals/net-standard) and [.NET implementation support](https://docs.microsoft.com/en-us/dotnet/standard/net-standard#net-implementation-support).

Also see the information about [Portable Class Library and Xamarin](net-dg-supported-platforms.md#portable-class-library).