What is MQTT, MQTT features, How does MQTT work, MQTT Connection and Broker, MQTT applications, MQTT with ESP32 or How to publish a message using ESP32 MQTT, MQTT testing, MQTT publish and subscribe architecture Hello readers, today we will learn about the messaging protocol supported by ESP32(called MQTT protocol), which is used for IoT applications. The communication protocol to be used for data transmission and connectivity in web-enabled devices depends upon the type of IoT application. The Internet of ....