A composite cluster connection is a collection of cluster connections. Composite cluster connections enable you to use two levels of load balancing cluster policies. Each child cluster connection of the composite cluster connection can have a different load balancing policy, and the composite cluster connection has a separate load balancing policy.

When the publishers send the messages to the composite cluster connection, based on the policy governing the composite cluster connection, the published message load is routed to the child cluster connections. Each child cluster connection processes the messages based on the policy governing that child cluster connection. In a composite cluster connection, the child clusters connections work like a single Broker connection.