Bhushan Nene, Trent Swanson and I have worked on project Riviera - a comprehensive code sample to demonstrate how to develop multi-tenant highly-scalable line-of-business applications on Windows Azure Platform. We have released the source code on MSDN Code Gallery. You can also find links to screencast there. We still plan to refactor and clean the code. Riviera uses Customer Loyalty Management scenario for illustration purposes, however many building blocks are applicable to a broad range of line-of-business applications.
Senior Solutions Architect, Microsoft