@sharg3 a PSC key word search brings up the same question with an answer:
Does Pega support for Rabbit MQ Integration.
Integration supports RabbitMQ through JMS connectors. Note that RabbitMQ offers a plug-in that supports JMS integration, which would allow leveraging RabbitMQ with the current Pega support for JMS: https://github.com/rabbitmq/rabbitmq-jms-topic-exchange
Please clarify if this request is about replacing the underlying technology for the QP and stream features to use a different technology.
If you have access to our Agile Studio system you’d also find FDBK-30628 (support RabbitMQ natively in Pega)
We have added a lot of information in the solution provided in the following PSC question
Integrating RabbitMQ with Pega Platform 8.8.1
@chinm and @snirm I am copying you in on this as points of interest.