What is Microsoft .NET?
This question cannot be easily answered in a few words.
Maybe like this: For a couple of years .NET is Microsoft's essential software strategy. It includes particulary the so-called .NET Framework, that makes up the basis for development and execution of highly productive applications. This concept is geared to software communication and focuses on open standards like XML and Web services.
Besides an extensive class library several other components belong to this program. For example an extended security concept, ASP.NET (the web sector) and tools like the programming languages Visual Basic .NET or C# (used by us).
Since the launch of Windows Server 2003 operating system the .NET Framework forms part of the Windows standard shipment. The new Windows Vista includes version 3.0 of the Framework.
You can find out more about Microsoft .NET here.