MQTT - standards-based plumbing for the Internet of Things

MQTT is a publish-subscribe messaging protocol that is well-suited for connecting devices in the Internet of Things. It was designed for constrained environments like low-bandwidth, high-latency or unreliable networks, and supports publishing and subscribing to messages with minimal bandwidth usage. MQTT has grown in popularity for industrial and IoT applications where devices need to transmit sensor data or receive commands, and its simplicity has allowed even children to understand how message flow works. While MQTT works well for many current IoT uses, further development is still needed in areas like security, data formats and device discovery as the IoT continues to expand.