Exclusive there can be only 1 consumer on the same topic with the same subscription name.

Failover subscription mode, multiple consumer will be able to use the same subscription name but only 1 consumer will receive the messages.

KeyShared subscription mode, multiple consumer will be able to use the same subscription and all messages with the same key will be dispatched to only one consumer.

Shared subscription mode, multiple consumer will be able to use the same subscription name and the messages will be dispatched according to a round-robin rotation between the connected consumers.

SubscriptionType of subscription supported by most messaging systems.