1. Outsourcing refers to a management mode in which enterprises integrate and utilize the best specialized external resources to reduce costs, improve efficiency, give play to core competitiveness and enhance their adaptability to the environment. "Outsourcing" means that an enterprise signs a contract with an external business contractor to provide a certain product or service for the enterprise, rather than using its own employees to produce such products or services within the enterprise.

2. The outsourcing service forms mainly include: IT resource outsourcing service, marketing outsourcing, human resource management outsourcing, accounts receivable outsourcing, administrative logistics and so on.

3. Understand the concept of outsourcing: outsourcing includes purchasing services from outside to carry out the internal activities of the organization. In this case, the organization has established a contractual relationship with the service provider, thus reducing and eliminating the direct management and control of the corresponding activities by the original company.