IoT is a hot topic in technology nowadays, which aims to connect and exchange data reliably with Machine to Machine communication. MQTT (Message Queuing Telemetry Transport) is one of the commonly used protocol in this field. It consists of MQTT Broker and MQTT Clients. Where MQTT Broker is the server through which all MQTT Clients are communicating with each other. CloudMQTT provides MQTT Broker as a service, which we are using in this tutorial.

Follow the tutorial series in my blog:

https://www.elementzonline.com/blog/using-MQTT-with-esp8266