Microsoft .NET
Windows Vista is the first client version of Windows to ship with the .NET Framework. Specifically, it includes .NET Framework 2.0 and .NET Framework 3.0 (previously known as WinFX) but not version 1.0 or 1.1. The .NET Framework is a set of managed code APIs that is slated to succeed Win32. The Win32 API is also present in Windows Vista, but does not give direct access to all the new functionality introduced with the .NET Framework. In addition, .NET Framework is intended to give programmers easier access to the functionality present in Windows itself.