Information about Deploy projects to Windows Azure and supported scenario is available here.
As a deployment model, Sitefinity supports Windows Azure Cloud Services. Windows Azure Web Sites is not supported, because it does not support network communication between multiple instances, which makes Sitefinity’s cache invalidation mechanism (web service calls) irrelevant.
Do you want to have your say in the Sitefinity development roadmap? Do you want to know when a feature you requested is added or when a bug fixed? Explore the Telerik Sitefinity CMS Ideas&Feedback Portal
and vote to affect the priority of the items