I agree a statement that Pulsar and RabbitMQ are two different products. I understand Pulsar could be missing key based binding, exchanging, and routing in RabbitMQ. (to certain extend, Pulsar Function and key based routing might be able to provide routing features but it is not baked as first class citizen as RabbitMQ.) Do you care to elaborate what are a lot of missing features for event driven from Pulsar?

(Another clarification - Technically Pulsar client is a thick client. It allows both client and broker to co-manage the flow control. It is more than a push based queue. It does data streaming.)