Visual Studio LightSwitch 2011 is a development tool that helps you build business applications quickly. LightSwitch provides a simplified development environment that enables you to concentrate on the business logic instead of the application infrastructure.
Most business applications are forms-over-data applications that provide a UI for viewing, adding, and modifying data. When you use other development tools to build forms-over-data applications, much of your time is spent on repetitive tasks. You write code to interact with a database, you write code for the user interface, and you write code for the business logic. When you use LightSwitch, much of the repetitive work is done for you and, in fact, you can create a LightSwitch application without writing any code at all! For most applications, the only code you have to write is the code that only you can write: the business logic.