It means that the Windows hosting provider support .NET Framework 4.0.
Visual Studio 2010 and .NET Framework 4 are the last generation developer tools from Microsoft.
ASP.NET 4 introduces a number of features that improve core ASP.NET services such as output caching and session-state storage.
jQuery Included with Web Forms and MVC.
Web Forms has been a core feature in ASP.NET . . . → Read More: ASP.NET 4 Hosting Advantages
.NET Framework 4 is required to run and develop ASP.NET 4.0 sites.
Install .NET Framework 4
The Microsoft .NET Framework 4 web installer package downloads and installs the .NET Framework.
Recommended Minimum: Pentium 1 GHz or higher with 512 MB RAM or more
Minimum disk space: 850 MB
Internet Information Services (IIS) version 6.0 or later
Microsoft Data Access Components 2.8 . . . → Read More: ASP.NET 4.0 Hosting Guide