The actual process of audit consists of two steps which are \u201cDocument Review\u201d and the \u201cProcess Review\u201d. In the Document Review, the auditors first check whether the procedural documentation is meeting the requirements of ISO 9001. On the other hand, in the process review, the key component of the audit process includes checking real business actions in contrast to the documentation and finding differences. Every audit is intended to assess that the ISO 9001 is implemented in an effective manner. Still, it is not possible for the auditors to evaluate all processes, documents and employees in the organization. As a result, itis essential that a representative sample must be picked by the auditor by using his or her best judgment. The Plan-Do-Check-Act model is generally used by the process owners while managing these audits. In that order, audit supervisors have the advantage of defining, implementing, evaluating, and improving the audit program. Interestingly, this model is considered as one of the helpful instruments of quality control in the modern age.<\/p>\n