Always On Availability Groups

Always On Availability Groups is a feature in Microsoft SQL Server that ensures high availability and disaster recovery for databases. Imagine your favorite online service; it needs to be constantly accessible, even if some parts fail. This technology allows multiple copies of a database to run in different locations at the same time. If one copy has issues, another can quickly take over, minimizing downtime. It also supports failover, meaning if the primary database goes down, users are seamlessly shifted to a backup, ensuring continuous access to important data.