Windows Azure uses the Live ID as an account, and after the user logs on to Windows Azure Portal and enters a Windows Live ID login and buys Windows Azure Services, the live The ID is called the subscription Live ID. Typically, this Live ID is held by the company's financial staff or project manager.
Subscription Live ID Users can associate multiple live IDs to use this Windows Azure Subscription that he purchased, and these live IDs become admin live IDs. The Admin Live ID can control all features within the current subscription, including creating deletion service (Hosting service and Storage service), creating delete SQL Azure Server and create delete Windows Azure AppFabric namespace, and so on. The owner of this admin Live ID is usually the project manager.
For the Windows Azure Section, the owner of the Admin Live ID can also create a co-admin Live ID to enable multiple people to control the needs of Windows Azure. The Co-admin Live ID has the same permissions as the admin Live ID, but Co-admin cannot manage other co-admin live IDs and the admin Live ID, which means that he cannot delete any other co-admin that is created in addition to the admin Live ID Live ID.
Http://www.cnblogs.com/threestone/archive/2012/01/17/2457828.html