Ктото пользовал? Как оно?

Visual C++ Team Blog: CppRestSDK 2.9.0 is available on GitHub
https://blogs.msdn.microsoft.com/vcblog/2016/10/21/cpprestsdk-2-9-0-is-available-on-github/

The C++ REST SDK is a Microsoft project for cloud-based client-server communication in native code using a modern asynchronous C++ API design. This project aims to help C++ developers connect to and interact with services.
https://github.com/Microsoft/cpprestsdk