Cross-Tenancy Standby database using Autonomous Data Guard Groups model

In Oracle Public Cloud deployments of Autonomous AI Database on Dedicated Exadata Infrastructure, when you create an Autonomous Container Database, you can create up to two standby databases in a different tenancy from the primary database using the Autonomous Data Guard Groups model. This choice allows you to add a standby database from a different tenancy, letting your database failover or switchover to that cross-tenancy standby database.

See Autonomous Data Guard Configuration Options and Add a Cross Tenancy Standby Database for more details.