This guide discusses the ISO 9001:2015 quality management system (QMS) standard, outlining its core fundamentals essential for establishing a functional QMS. It explains that while ISO 9001 compliance does not address all niche requirements for specific industries like medical devices and pharmaceuticals, it provides foundational groundwork for quality management activities. The document details the principles and clauses of ISO 9001:2015, emphasizing the importance of a strategic approach to quality management. It presents the role of leadership in implementing and maintaining the QMS, planning actions to address risks and opportunities, and ensuring effective communication and resource allocation. The guide also outlines the need for continuous improvement in processes and the importance of understanding both internal and external factors that impact quality management. Overall, the document serves as a comprehensive resource for organizations aiming to comply with ISO 9001 requirements.