MQTT (Message Queuing Telemetry Transport) is a pub-sub messaging protocol optimised for IoT devices with limited resources — low bandwidth, low power consumption, intermittent networks. Originally designed by IBM in the 1990s for monitoring oil pipelines, it has today become the de-facto standard for IoT, both consumer and industrial.
The pub-sub architecture distinguishes MQTT from traditional REST APIs. Devices publish messages to 'topics' (e.g. 'factory/line3/machine7/temperature'), and other systems subscribe to relevant topics — there is no point-to-point communication. A central broker (Mosquitto, HiveMQ, AWS IoT Core) mediates. This scales to thousands or millions of devices with simplicity, and decouples producers from consumers.
INFOS implements MQTT in industrial solutions where there are distributed sensors — capturing environmental conditions, energy monitoring, telemetry of distribution vehicles. For customers combining OPC-UA (main machines) with MQTT (auxiliary sensors), the integrated architecture provides a unified view in KORA Productivity and in MyBusiness-ITV dashboards.