Managed C++

Managed C++ WAS the C++ Language extension provided by Microsoft, but now it's C++/CLI, so Managed C++ is pretty much old new's now. Programming in C++/CLI simply allows you to program with the .NET class library extension's, and have the code compile to MSIL instead of Machine code like C++ usually does, so C++/CLI is pretty much no different to VB.NET or C#.NET, its just the new syntax. Managed C++, however, was the old language extension that people found bloaty, so Microsoft changed the syntax and therefore developed C++/CLI, allowing you to program in the CLR.