This article was automatically translated from the original Turkish version.
+1 More
ISO 9001 is an international standard published by the International Organization for Standardization (ISO) that defines requirements for a Quality Management System (QMS). It provides a framework to help organizations consistently deliver products and services that meet customer and applicable legal and regulatory requirements and to enhance customer satisfaction. With over one million certifications issued in 189 countries worldwide it is the most widely used quality management standard. ISO 9001 demonstrates that an organization has established effective processes and trained personnel to deliver flawless products or services on time.
The standard is designed with a general structure that can be applied to any organization regardless of sector type or size. It is suitable for all industries including manufacturing services healthcare education public sector and nonprofit organizations. The current version of the standard is ISO 9001:2015 which was most recently reviewed and confirmed in 2021. It is indicated that a new revision is under development and expected to be published in 2026.
ISO 9001 is part of the ISO 9000 family of standards which address various aspects of quality management and include some of ISOs most well-known standards. One of the key standards in this family ISO 9000 defines the fundamental concepts and terminology of quality management. ISO 9001 is the only standard within this family that can be certified although certification is not mandatory. Another standard in the family ISO 9004 provides guidance on how to make an implemented Quality Management System more successful by focusing on improving existing processes and offering best practice insights.
The ISO 9001 standard and all other quality management standards in the ISO 9000 family are based on seven fundamental quality management principles. These principles provide a foundation to help organizations improve their performance and achieve sustainable success. The principles are as follows:
ISO 9001:2015 follows the High Level Structure (HLS) known as Annex SL to facilitate compatibility with other ISO management system standards. This common structure makes the integration of different standards such as ISO 14001 (Environmental Management System) and ISO 45001 (Occupational Health and Safety Management System) more effective and efficient. The standard consists of ten main clauses. The first three clauses are introductory while the last seven contain the requirements for a QMS.

(Generated by Artificial Intelligence.)
The clauses containing the core requirements are as follows:
A risk based thinking approach has been integrated throughout the standard. This approach ensures that risk is systematically addressed within a quality management system and helps organizations identify potential issues in advance to allocate resources to areas of greatest need.
Implementing and certifying a Quality Management System based on the ISO 9001 standard provides organizations with significant benefits across various areas. These benefits span a wide range from operational efficiency to market competitiveness.
ISO 9001 certification is the process by which an independent certification body verifies that an organization’s Quality Management System meets the requirements of the standard. Although certification is not mandatory it is an important step for many organizations in terms of market access and customer confidence. The certification process typically includes the following steps:

ISO 9001 serves as a foundation for many industry specific quality management standards. These standards adopt the general framework of ISO 9001 and add specific requirements and regulations relevant to particular industries to provide a more specialized structure. Some industry specific standards based on ISO 9001 include:
Advisera. "What is the ISO 9001 standard? A straightforward overview." Advisera. Accessed August 4, 2025. https://advisera.com/9001academy/what-is-iso-9001/
Amtivo. "ISO 9001 - Quality Management Systems (QMS) Certification." Amtivo. Accessed August 4, 2025. https://amtivo.com/us/iso-certification/iso-9001/
BSI Group. "ISO 9001 - Quality Management Systems | BSI." BSI Group. Accessed August 4, 2025. https://www.bsigroup.com/en-CA/products-and-services/standards/iso-9001-quality-management-systems/
International Organization for Standardization. "ISO 9000 family — Quality management." ISO. Accessed August 4, 2025. https://www.iso.org/standards/popular/iso-9000-family
International Organization for Standardization. "ISO 9001:2015 - Quality management systems — Requirements." ISO. Accessed August 4, 2025. https://www.iso.org/standard/62085.html
Intertek. "ISO 9001 | Quality Management Systems Certification." Intertek. Accessed August 4, 2025. https://www.intertek.com/assurance/iso-9001/
NQA. "ISO 9001 Certification - Quality Management Standard - NQA." Accessed August 4, 2025.
PECB. "ISO 9001 Quality Management System Training Courses." PECB. Accessed August 4, 2025. https://pecb.com/en/education-and-certification-for-individuals/iso-9001
ISO 9000 Family of Standards
Quality Management Principles
Structure and Requirements of the Standard
Benefits of ISO 9001
Certification Process
Industry Applications