What is .NET Platform? Microsoft .NET platform defines a standard around which a system can be developed. Microsoft .NET platform provides countless opportunities for different services and systems to interact, allowing programmers to develop powerful solutions for the internet. A major theme of Microsoft .NET platform is the idea of Web services, allowing software to communicate directly with other software using Internet technologies. The .NET Framework and Visual Studio.NET, two more core aspects of this initiative, provide a multi-language environment in which developers can create Web services and other kinds of applications.