.NET Framework 3.0:

                .NET Framework 3.0, formerly called WinMax was released on 21 November 2006. It includes a new set of Managed Code  APIs. There are no major architectural changes included with this release.

            .NET Framework 3.0 = .net 2.0 Features + WF + WPF +WCF + Cardspace

Changes in 3.0 on comparison with 2.0:

•  Windows Workflow Foundation (WF): It is a Microsoft technology for defining, executing, and managing workflows. This technology was first released in November 2006 as a part of .NET Framework 3.0. Windows Workflow Foundation allows for building of task automation and integrated transactions.

• Windows Presentation Foundation (WPF): It is a graphical subsystem for rendering user interfaces in Windows-based applications. WPF attempts to provide a consistent programming model for building applications and provides a clear separation between the user interface and the business logic.

•  Windows Communication Foundation (WCF): It is a service-oriented messaging system which allows programs to interoperate locally or remotely similar to web services.

•  Windows CardSpace: It is a software component which securely stores a person's digital identities and provides a unified interface for choosing the identity for a particular transaction, such as logging in to a website.