MQTT – Message Queuing Telemetry Transport

MQTT is specified in ISO/IEC 20922 and offers a simple protocol for distributed data sources. Thanks to its easy and flexible use, it is frequently selected for IoT applications. Data packets with any content and a size of up to 64 kB can be exchanged together with a readable designator (topic) between distributed devices and a central broker. This enables the distributed devices to be fully independent and only require a communication relation to the broker, so that very flexible networks can be created easily.