Auto-failover groups make good use of active geo-replication by providing group-level replication and automatic failover. Moreover, you will not have to change the SQL connection string if a failover occurs. To create an auto-failover group, follow these steps:

1. Navigate to the SQL Server in which the databases exist.
2. Under Settings, click on Failover groups, as shown in the following screenshot:

3. Click on Add group to add an auto-failover group.
4. A new blade will pop up, where you will have to specify the following:
   • Failover group name: Specify a descriptive name for the failover group.
   • Secondary server: Specify the secondary server that will host the replicated database.
   • Read/Write failover policy: You can let this process be done automatically, which is the default, and is recommended. Otherwise, you will have to do it manually.
   • Read/Write grace period (hours): Specify the time between every automatic failover.
   • Database within the group: Select the databases in that Azure SQL Server that you would like to add to the auto-failover group:

5. Once you are done, click on Create.