Using NerdDinner as an example, Jim walks through migrating an ASP.NET Web App to Windows Azure taking it from a single instance IIS hosted app to a scalable cloud application that runs on Windows Azure and uses SQL Azure for the data and ASP.NET providers.

http://blogs.msdn.com/jnak/archive/2010/02/08/migrating-an-existing-asp-net-app-to-run-on-windows-azure.aspx