MQTT

MQTT An open communications protocol for the Internet of Things (IoT). MQTT is not an acronym, it is simply the name of the protocol. Source: https://www.hivemq.com/blog/mqtt-essentials-part-1-introducing-mqtt/ is an open communications protocol often used in the Internet of Things (IoT). It uses a publish/subscribe architecture to send and receive data. A broker facilitates the communications between publishers and subscribers by receiving published messages and distributing them to subscribers. One advantage of MQTT is that communications are initiated by the GRANITE 6 so firewalls do not cause problems.

For full MQTT specifications see: https://mqtt.org/ .