I've been using Microsoft APIs for about twenty years now. When a new MS technology comes out, I've learned that: alpha and 1.0 - for experimentation only 2.

I've been using Microsoft APIs for about twenty years now. When a new MS technology comes out, I've learned that: alpha and 1.0 - for experimentation only 2.0 - OK for internal tools 3.0+ - ready for production This has been true going all the way back to mfc through asp.net, mvc, etc. 2.0 and even 1.0 might work in production, but you end up with the problem of having a bunch of production code that needs updated to the newer 3.0+ api changes which ends up being significant.