Here’s a video I shot demonstrating how to convert a simple Web Service (ASMX) to become a fully scalable Cloud Service running on Windows Azure. It’s a very straightforward process when using Visual Studio 2012.
Here’s the YouTube Link
1. Create the Cloud Service as a WCF Worker Role
2. Add the method signatures of your Web Methods to the Interface Definition, and attribute them with [OperationContract]
3. Add the web methods to the service implementation, removing the [WebMethod] attribution.
The source code for the Price History Web and Cloud Services is available here: http://mediasvcp5lc0xlx242lz.blob.core.windows.net/blogstuff/PriceHistoryWebService.zip