What is IoT? Explain how MQTT works?

Question

Accepted Answer

IoT stands for Internet of Things. MQTT is a lightweight messaging protocol for IoT.

IoT refers to the network of physical devices, vehicles, home appliances, and other items embedded with electronics, software, sensors, and connectivity.
MQTT (Message Queuing Telemetry Transport) is a publish-subscribe messaging protocol designed for IoT devices with limited processing power and bandwidth.
MQTT uses a broker to handle message distribution between publishers and subscribers.
MQTT messages are organized into topics, which subscribers can subscribe to and receive messages from.
MQTT supports Quality of Service (QoS) levels to ensure message delivery reliability.
MQTT is widely used in IoT applications such as home automation, industrial automation, and smart cities.

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