SQL Server in the Azure Cloud: IaaS versus PaaS Azure SQL Database is one of two ways organizations can leverage SQL Server in the Azure cloud. The other is SQL Server on Azure Virtual Machines (VMs), which uses an Infrastructure-as-a-Service (IaaS) model to host an instance of SQL Server. aeadmin Dec 12 2016 Azure, Private Cloud, Technology adaptivedge,Azure,BYOL,Cloud,IaaS,IoT,microsoft gold partner,PaaS,SQL