Azure SQL Database
A fully managed relational database service (PaaS) based on the SQL Server engine.
Azure SQL Database is a fully managed PaaS relational database built on the SQL Server engine. Microsoft handles the virtual machines, OS, patching, automated backups, and built-in high availability, so you focus on schema and queries instead of infrastructure. For AZ-900, place it against Azure SQL Managed Instance (near-full SQL Server compatibility for lift-and-shift) and SQL Server on Azure VMs (IaaS). SQL Database is the most abstracted option and omits some features. For a greenfield cloud app with no legacy compatibility needs, choose Azure SQL Database.
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