ITSS is a standard library, from basic evaluation standards, management control standards to consulting, integrated implementation, operation and maintenance to achieve a series of standards around information technology services, from the basic, governance, management, industrial application of three-dimensional system integration. ITSS competency core elements are fully and forcefully expressed and applied at all levels of information technology services. That is, the construction of capacity system runs through all parts of information technology services to achieve systematic operation of information technology services, and its overall content is deeply integrated and integrated, so as to facilitate the use of different parts of the standard by enterprises, to obtain effective unity and integration. In principle, the construction follows the principle of centralized planning, overall arrangement, management support, full participation and continuous improvement.

Data sources: (baike.baidu.com/item/ITSS/9237386?fr=aladdin in words)