What is MQTT?  MQTT (Message Queuing Telemetry Transport) is a lightweight, publish-subscribe network protocol designed for reliable communication in low-bandwidth, high-latency, or unreliable networks. It is widely used in the Internet of Things (IoT) due to its low power usage, small code footprint, and efficient message delivery.

At its core, MQTT relies on a broker to manage message distribution between clients. Devices publish messages to specific "topics," and any client subscribed to that topic will receive the data instantly. This structure makes it ideal for real-time applications such as remote monitoring, home automation, and industrial control systems.

One of the key advantages of MQTT is its minimal overhead. Unlike traditional HTTP protocols, MQTT maintains persistent connections and uses a simple header format, which reduces network strain. Additionally, it supports three levels of Quality of Service (QoS), giving developers control over delivery guarantees.

As IoT ecosystems grow, MQTT’s role becomes even more crucial. Its efficiency, scalability, and robustness make it a go-to choice for companies building smart solutions that require real-time communication.

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