The MQTT (Message Queuing Telemetry Transport) server is a lightweight, publish-subscribe messaging protocol that supports efficient, reliable, and scalable data communication, especially in IoT (Internet of Things) environments. It enables real-time data transfer between devices and applications, making it ideal for industries such as healthcare, automotive, and smart homes. The MQTT server supports high-throughput, low-latency messaging and is designed to function efficiently in environments with low bandwidth, limited power, or intermittent connectivity. It ensures secure, reliable communication even in challenging conditions.