It usually belongs to the technical department, and together with R&D, testing and system management, it is the four major departments of technical support for Internet products.
The generation of an Internet product generally goes through the following processes: product manager, demand analysis, R&D department development, testing by testing department, deployment and release by operation and maintenance department, and long-term operation and maintenance. In essence, it is the operation and maintenance of networks, servers and services at all stages of their life cycle.