[richdougherty]

They may still use some sort of event/message system. Kafka is lower level than other sorts message queue systems and requires more work to get correct (dedupe, ordering, retry logic), but has great performance. It's often easier to choose a different messaging system though.

[EdwardDiego]

Kafka ain't a MQ, it's a distributed log.

Pulsar is a Kafkaesque system that can act as distributed log _or_ an MQ.