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MQTT is currently the most widely used IoT protocol. We plan to help you quickly understand the MQTT protocol through a series of videos and become an expert in the MQTT field.

These videos will be divided into two parts: Basic and Advanced. The basic part mainly explains the essential features of MQTT, such as publish and subscribe, QoS, and sessions. The advanced part will introduce features such as will messages, retained messages, and shared subscriptions.

This video will cover the following:

  1. The characteristics and implementation principles of different QoS
  2. Applicable scenarios of different QoS