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MQTT-SN (MQTT for Sensor Networks) is a lightweight variant of the popular MQTT protocol, designed specifically for constrained devices and wireless sensor networks. It replaces the TCP transport with UDP (or other lightweight transports) and introduces features like topic aliasing and gateway-based architectures to reduce overhead.
This talk introduces MQTT-SN, explains its motivation, and explores how it fits into the IoT protocol landscape. We will also discuss the current state of MQTT-SN support in Zephyr, including security aspects such as DTLS, and how developers can use it in real-world applications.
