Since January 2010, many partners have switched from CTP (Community Technology Preview) to the Production release of Azure. Since February 1, 2010, they many also sell their own solutions based on Windows Azure and SQL Azure.
Windows Azure serves as development and hosting platform for applications. Thus, Windows Azure is in competition with offers like Amazon EC2. Windows Azure is paid by usage: $0.12 USD per hour plus $0.15 USD per stored Gigabyte and month. Storage transactions are billed with $0.01 USD per 10,000 transactions, plus $0.10 USD for incoming and $0.15 USD for outgoing traffic.
Windows Azure Drive starts as Beta
Storage can easily be integrated into the virtual instances using Windows Azure Drive, currently available as beta version. Applications running in the Cloud can then use NTFS APIs to access the storage.
SQL Azure is based on Microsoft SQL Server and can be used for your own applications. The service is Microsoft’s reply to Amazon SimpleDB, but works superior. There are two editions: Web Edition for a maximum of 1 GB relational data for $9.99 USD per month; and Business Edition for a maximum of 10 GB relational data for $99.99 USD per month. Both editions bill $0.10 USD for incoming and $0.15 USD for outgoing traffic.