Migrating to the Cloud
Windows Azure offers you the ability to host SQL Server databases to the cloud using either Windows Azure SQL Server virtual machines (VMs), which offer an IaaS (Infrastructure as a Service), or Azure SQL Database, which offers DaaS (Database as a Service).
When migrating to an IaaS offering, you remove the overheads associated with managing a physical or virtual infrastructure on premises. Instead, the infrastructure is contained and managed in Microsoft data centers. Your company only needs to manage the platforms used by the VMs. In the case of SQL Server VMs, this means Windows Server and SQL Server.