Standard for Management Audit or Management System Audit ISO 19011:2018 is an international standard (guideline) for auditing management systems. This document has defined principles of auditing, how to manage an audit programme and conducting management system audits. Guidance on the evaluation of the competence of individuals involved in the audit process has also been defined here. These activities include the individual(s) managing the audit programme, auditors and audit teams. It is applicable to all organizations that need to plan and conduct internal or external audits of management systems or manage an audit programme. The application of this document to other types of audits is possible, provided that special consideration is given to the specific competence needed.