.NET Standard will replace Portable Class Libraries (PCLs) as the tooling story for building multi-platform .NET libraries.
2.0
.NET Standard 2.0 added over 20,000 APIs to 1.6. It is a strict superset of 1.6.
.NET Standard 2.0 only has 43 APIs that
.NET Framework 4.6.1 doesn't support
.NET Standard 2.0 is supported by the following
.NET implementations
- .NET Core 2.0 or later
- .NET Framework 4.6.1 or later
- Mono 5.4 or later
- Xamarin.iOS 10.14 or later
- Xamarin.Mac 3.8 or later
- Xamarin.Android 8.0 or later
- Universal Windows Platform 10.0.16299 or later