Microsoft has made available for download the Windows Azure Toolkit for Windows 8 and it can be downloaded from CodePlex.com.
This tool is designed to accelerate development so that developers can start enabling Windows 8 features, such as notifications, for their app with minimal time and experience.
This toolkit includes:
– Visual Studio project templates for a sample Metro style app
– a Windows Azure cloud project
You can also check out the Windows Azure Toolkits for iOS, Windows Phone & Android, here.