Quality management systems
ISO 9001 is a set of quality management principles defined by various criteria and standards. It outlines the importance of defining a quality management system (QMS) that focuses on the customer, improvement, and optimization of the organisation’s management processes. 
An organization with ISO 9001 certification can be expected to offer a product or service that meets strict quality management standards.
First published in 1987, ISO 9001 was revised in 1994, 2000, 2008 and 2015 since then has undergone a series of updates and changes. The standard provides a process-oriented approach to documenting and reviewing the structure, responsibilities and procedures required to achieve effective quality management in an organization. ISO 9001 is based on the validation strategy of action and risk-oriented thinking that improves communication, efficiency, and implementation of continuous improvements.
 O. Peterson, “What is ISO 9001 Certification? How to Get Certified (For Beginners) | Process Street | Checklist, Workflow and SOP Software,” Apr. 05, 2019. (accessed Jan. 05, 2021).