# MQTT Introduction
MQTT protocol is an instant communication protocol for IoT applications, use TCP/IP to provide network connection, it can shield messages for load content with low cost, and reduce network traffic effectively.
Terminal datapoint reporting, and supported datapoint types include
Subscription, publication and message push based on Topic can realize message unicast and multicast between devices
MQTT protocol is applicable to scenarios where the device and platform need to maintain long connection. MQTT is characterized by unicast and multicast of messages between devices. It can manage and control real devices in form of application servers without relying on other services (issuing command services, pushing services, etc.).