Always On Availability Groups is a feature that was introduced in SQL Server 2012 Enterprise Edition as a replacement for database mirroring (covered below) and is also included in SQL Server 2017 for ...

The company considered using Windows Server Failover Clustering (WSFC) and SQL Server Enterprise Edition with Always On Availability Groups to add HA protection.

Making SQL Server “always on” SQL Server offers two of its own HA/DR features: Always On Failover Cluster Instances and Always On Availability Groups. FCIs afford three notable advantages: inclusion ...

For SQL Server instances requiring a high level of availability, there are several options. The traditional choice in a Windows environment is to deploy a SQL Server failover cluster instance (FCI).