From what I've seen (MS folks can correct me here), language services are part of a much larger effort at Microsoft led by Anders Heijsberg (Delphi, C#) called

From what I've seen (MS folks can correct me here), language services are part of a much larger effort at Microsoft led by Anders Heijsberg (Delphi, C#) called Roslyn [1], which decouples code analysis from IDEs and provides things like refactoring, autocomplete, find-all-references, Intellisense, etc. as services. This means the compiler is now an abstracted platform that editors can get services from (CompilerAndCodeAnalysis-as-a-service?). Anders talks about the motivation for doing that here [2]. It's a pretty exciting idea. This might mean I would some day be able to use Vim and get IDE-like functionality. [1] Roslyn https://github.com/dotnet/roslyn/wiki/Roslyn-Overview https://github.com/dotnet/roslyn/wiki/Roslyn-Overview [2] https://www.youtube.com/watch?v=wSdV1M7n4gQ https://www.youtube.com/watch?v=wSdV1M7n4gQ