A definition of quality is part of the core vocabulary for quality management which can be found in ISO 9000:2015  and applies to all ISO quality management standards, including ISO 9001. It says that quality is the “degree to which a set of inherent characteristics [or distinguishing features] of an object”, which in turn is defined as anything perceivable or conceivable, such as a product, service, process, person, organization, system or resource, “fulfils requirements.”