How many replicas can I have in an AlwaysOn availability group?

How many replicas can I have in an AlwaysOn availability Group 2016?

Limitation #2: You can only have two replicas – primary and secondary - per Basic Availability Group.

How many AlwaysOn availability groups can be configured in always on?

You can have more than one AlwaysOn Availability Group on your instance, but databases cannot belong to more than one group. Not configured for database mirroring.

How many synchronous secondary replicas can I have?

Up to 8 secondary replicas, including 2 synchronous secondary replicas (SQL Server 2016) Up to 8 secondary replicas, including 2 synchronous secondary replicas (SQL Server 2017) Up to 8 secondary replicas, including 5 synchronous secondary replicas (SQL Server 2019)

How many secondary replicas are configured?

Up to eight secondary replicas are supported, including one primary replica and two synchronous-commit secondary replicas.