The DA-Linker IoT management platform uses a cloud-integrated Data Infra for IoT platform to achieve massive industrial heterogeneous protocol adaptation, edge computing (data ETL, AI expansion, etc.), one-stop integration of massive data in the cloud, and cloud-side collaborative management capabilities. The platform business layer implements functions such as equipment management, alarm center, operation and maintenance center, real-time monitoring, and energy reporting for IoT energy. In addition, the platform also incorporates AI functions to use large models to enable personal offices and establish an enterprise knowledge base.