At complete maturity we'll support the following: * A secondary can mirror the primary completely, including HA PostgreSQL via Patroni * A planned failover maintenance mode that allows a secondary and primary to get fully in sync. This enables a regular failover / failback cadence * Verification of data for blobs and git data via the SSF * All existing data types are in the SSF * A cleaned up Frontend by removing old APIs and implementing https://gitlab.com/groups/gitlab-org/-/epics/4712#note_452004682 * Basic automation for failover tasks, including complex deployments * Documentation focus on Jobs To be Done