ISO/IEC 17021-1:2015包含对各类管理体系提供审计和认证的机构的能力、一致性和公正性的原则和要求。 按照ISO/IEC 17021-1:2015运行的认证机构不需要提供所有类型的管理体系认证。 管理体系认证是第三方合格评定活动，因此，执行该活动的机构是第三方合格评定机构。

ISO/IEC 17021-1:2015 contains principles and requirements for the competence, consistency and impartiality of bodies providing audit and certification of all types of management systems. Certification bodies operating to ISO/IEC 17021-1:2015 do not need to offer all types of management system certification. Certification of management systems is a third-party conformity assessment activity and bodies performing this activity are therefore third-party conformity assessment bodies.