This document provides an overview of ISO 9001:2015 requirements for quality management systems. It discusses key quality management principles like customer focus, leadership and engagement. The PDCA cycle and risk-based management approaches are covered. The main clauses of the ISO standard are outlined, including context of the organization, leadership, planning, support, operation, performance evaluation and improvement. Audit evidence requirements are listed for evaluating conformance to the standard. Overall it provides information on implementing and maintaining an effective quality management system.