I think this is an excellent article. The only thing I'd add is that RabbitMQ is an implementation of AQMP (optionally v1.0) as a standardized broker service pr

I think this is an excellent article. The only thing I'd add is that RabbitMQ is an implementation of AQMP (optionally v1.0) as a standardized broker service protocol so is designed to be interchangeable with other extant implementations such as Apache Active MQ and Cupid whereas Kafka is one-of-a-kind software. Beyond that RabbitMQ has standardized client libs and frameworks in Java land if that matters to you - it did matter in the original context of message queue middlewares and SOA from where AMQP originated and where enterprise messaging sees major use. OTOH Kafka, with caveats, is in principle more "web scale" - though that is far from a free ride.