IT outsourcing is a service model in which enterprises entrust their information technology work (such as system maintenance, software development, network security, etc.) to a professional third-party team for management. The core value is to reduce enterprise IT costs through specialized division of labor, while obtaining continuous technical support and upgrade guarantees. Typical scenarios include cloud service hosting, 24-hour operation and maintenance, customized software development, etc., enabling enterprises to focus more on core business development.