Web API: Thoroughly Modern Millie So, if lots of things are better but there's nothing really groundbreaking in WCF 4.5, what's really new? That's where the ASP.NET Web API comes in.

The Web API is compatible with the .NET Framework 4, so you can try it out right now (in fact, the Web API installer refuses to install on computers with .NET Framework 4.5). You might know the tool ...