The Microsoft .NET Framework is a software framework that provides language interopability across languages such as C# and VB.NET. The .NET Framework is mainly used to create web applications that run under Internet Information Service (IIS) on Windows servers or to create console or Windows desktop applications. Arisen has developed many solutions since 2003 using the .NET Framework versions 1.1, 2.0, 3.5, 4.0, and 4.5.