建立和维护提供 IT 服务和解决方案的服务水平。设计和维护 IT 服务和解决方案目录，以及服务水平协议。评估 IT 服务水平协议的绩效。将结果传达给管理层。 Establishing and maintaining service levels for the provision of IT services and solutions. Design and maintain the IT services and solution catalog, as well as service level agreements. Evaluate the performance of IT service level agreements. Communicate the results to the management.