Architecture

Web Services
Frameworks and Libraries: ASP.NET, ADO.NET, Window Forms
Interchange standards: SOAP, WSDL, UDDI	Common Development Tools: Visual Studio .NET
Component Model
Object Model and Common Language specification
Common Language Runtime

Web services: are the applications built with .NET. These services will be provided to users.
Frameworks and libraries: are a bunch of libraries available for developers to use.
Interchange standards are more libraries. These ones support SOAP, et.al.
Development Environment: Everybody use Visual Studio!
Component Model: Like CORBA, COM, and J2EE, but different.
Object Model and CLS: place restrictions on all program languages so that they can run in the
Common Language Runtime which is a (JIT) virtual machine with support for versioning.