Azure Event hub and Kafka .. are not message queue.

A real queue have an API similar to JMS, ex rabbitMQ, IBM MQ, Microsoft MQ, …

The difference is you have a mailbox of message from which you remove messages you have consumed by acknowledging reception. Message will be sent to subscribers until they are acknowledged.

So publisher write message m1, m2, m3

subscriber receive m1, m2,m3 and ack only m3.

it will later receive m1 and m2 again but not m3.

Kafka is more like tcp It’s a stream.