l ASP.NET builds on the programming classes of the .NET Framework, providing a Web application model in the form of a set of controls and infrastructure that make it simple to build Web applications.
The Common Language Runtime is the execution engine for .NET Framework applications. A third party vendor can provide the web services.
l The CLS assumes that language interoperability is important only across the assembly boundary.
l The System namespace also contains 24 second-level namespaces.