# aws mq > Define and operate message brokers in AWS. > More information: . - Create a broker: `aws mq create-broker --host-instance-type {{instance_type}} --broker-name {{broker_name}} --engine-type {{ACTIVEMQ|RABBITMQ}} {{--publicly-accessible|--no-publicly-accessible}}` - List all brokers: `aws mq list-brokers` - Describe a specific broker: `aws mq describe-broker --broker-id {{broker_id}}`