The MQTT standard is one of the fundamental foundations of modern IoT and is ideally suited to connected object scenarios by providing rich functionality while remaining lightweight. But ultimately, what are the underlying mecanisms? How did it become so popular? What does he do that others don't ?

We will discover the mysteries of MQTT by addressing different fundamentals in depth such as Topics, Quality of Service (QoS), Retained Messages or even Last Will and Testament messages which allow a wide range of very rich use cases just with the standard itself. We will quickly discuss the differences between version v3.1.1 and v5 which introduces interesting subtleties to make the developer's life easier.

This conference offers an in-depth technical understanding of the MQTT protocol and will mainly focus on demos to better understand the concepts.