Microsoft Visual Studio LightSwitch helps you solve specific business needs by enabling you to quickly create professional-quality business applications, regardless of your development skills. LightSwitch is a new addition to the Visual Studio family. Visual Studio LightSwitch is designed to simplify and shorten the development of typical forms-over-data business applications.
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The applications produced are architecturally 3-tier: the user interface runs on Microsoft Silverlight; the logic and data-access tier is built on WCF RIA Services and Entity Framework, hosted in ASP.NET; and the primary data storage supports Microsoft SQL Server Express, Microsoft SQL Server and Microsoft SQL Azure.