YOUnite uses ActiveMQ (AMQ, https://activemq.apache.org ) as its message broker for communication between the YOUnite UI, the the YOUnite MDM API service, and the adaptors (Adaptors).
Background
Message Broker and the YOUnite Router
Recipes for Configuring the Message Broker
Configuring Message Broker for YOUnite
Communicating with Message Bus
Message broker configuration for YOUnite Adaptor
Communicating with Message Bus from YOUnite UI