The .NET Framework is an integral Windows component that supports building and running desktop applications and Web services. It provides a managed execution environment, simplified development and deployment, and support for a wide variety of programming languages. Two key components are the common language runtime (CLR), which manages memory, code execution, and other system services, and the .NET Framework class library, which is a collection of reusable types you can use to develop your applications. The .NET Framework also includes technologies such as ADO.NET, ASP.NET, Windows Presentation Foundation (WPF), Windows Communication Foundation (WCF), and Windows Workflow Foundation (WF).