The Application Architecture Guide provides design-level guidance for the architecture and design of applications built on the .NET Framework. It focuses on the most common types of applications, partitioning application functionality into layers, components, and services, and walks through their key design characteristics.
This should be complete by the next January 2009.
Really great and awesome effort. I have been searching for such a repository of apps design and architecture for Microsoft technologies.
Application Architecture Guide on codeplex
http://www.codeplex.com/AppArch
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