Message Queuing Telemetry Transport, aka Message Queuing Telemetry Transport, is a protocol created in 1999.

MQTT (Message Queuing Telemetry Transport) is an ISO standard (ISO/IEC PRF 20922) publish-subscribe-based messaging protocol. It works on top of the TCP/IP protocol. It is designed for connections with remote locations where a "small code footprint" is required or the network bandwidth is limited. Read more on Wikipedia...

• Message Queuing Telemetry Transport website
• Message Queuing Telemetry Transport Wikipedia page
• Message Queuing Telemetry Transport first developed in Organization for the Advancement of Structured Information Standards
• mqtt.org was registered in 2004