This is an architectural overview of Stocktrader. See Greg demo this incredible SOA application here:
Demo Part 1
Demo Part 2
Demo Part 3
From the stocktrader site:
"This application is an end-to-end sample application for .NET Enterprise Application Server technologies. It is a service-oriented application based on Windows Communication Foundation (.NET 3.0) and ASP.NET, and illustrates many of the .NET enterprise development technologies for building highly scalable, rich "enterprise-connected" applications. It is designed as a benchmark kit to illustrate alternative technologies within .NET and their relative performance.
The application offers full interoperability with J2EE and
IBM WebSphere's Trade 6.1 sample application. As such, the application offers an excellent opportunity for developers to learn about .NET and building interoperable, service-oriented applications."