How is RabbitMQ commercial licensing structured Commercial RabbitMQ — the Tanzu RabbitMQ distribution from Broadcom — is licensed by vCPU core count. Not by users, not by messages, not by throughput. By the number of virtual CPU cores your RabbitMQ brokers run on across all environments. https://acemq.com/faq/how-rabbitmq-licensing-pricing-works/