what is mqtt
From Wikipedia, the free encyclopedia. MQTT (formerly MQ Telemetry Transport) is a publish-subscribe based light weight messaging protocol for use 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.QTT-SN is a variation of the main protocol aimed at embedded devices on non-TCP/IP networks, such as ZigBee. Historically, the 'MQ' in 'MQTT' came from IBM's MQ message queuing product line.