A QMS is a living system that develops over time through spells of improvement, and every organisation already does some quality management whether or not it ever planned it formally; building a formal system therefore begins by finding out which activities already exist and how well they suit the organisation's context, after which this standard, ISO 9004 and ISO 9001 together help shape a coherent system. A formal QMS gives a structure within which quality management activities can be planned, carried out, watched and improved; it does not have to be complicated, only to reflect faithfully what the organisation needs, and the concepts and principles are useful guides in building it. Planning the system is continuous rather than a single event: plans develop as the organisation learns and as conditions change, a plan takes in all the organisation's quality activities and covers the guidance of this standard and the requirements of ISO 9001, and it is put into effect once approved. The organisation regularly watches and evaluates how the plan is being implemented and how well the QMS performs, with well-chosen indicators making that easier; auditing is a way of judging how effective the system is, so that risks are found and fulfilment of requirements is confirmed, it needs tangible and intangible evidence to be gathered, correction and improvement follow from analysing that evidence, and what is learned can lead to innovation and carry QMS performance higher.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.