Discipline dealing with the achievement quality of products and services, systems and increasing their level. This is a quality assurance with the socio-technical systems. There are used the theory of system, process management and a whole range methods. The base consists of international standards of ISO quality management (e.g. ISO 9001, ISO 14001, ISO 27001, IATF 16946, AS 9001 ...) that arose from the practical experience of successful managers.