A communication system built on MQTT consists of the publishing server, a broker and one or more clients. The publisher does not require any configuration concerning the number or location of subscribers receiving messages. Likewise, subscribers do not need publisher-specific setup. There may be more than one broker on the system distributing messages.
RabbitMQ is lightweight and easy to deploy on premises and in the cloud. It supports multiple messaging protocols. RabbitMQ can be deployed in distributed and federated configurations to meet high-scale, high-availability requirements.
RabbitMQ runs on many operating systems and cloud environments.