Quality Management System standard ISO 9001 is known for establishing basis of all ISO standards. Organizations use the standard to demonstrate the ability to consistently provide products and services that meet customer and regulatory requirements.
Typically, an entire organization will seek certification, but the scope of the QMS can be tailored to improve performance at a particular facility or department.  The current version is ISO 9001:2015, which was published in September of 2015.
• It does NOT matter what size your organization is: 1 person or 1 million people.
• It does NOT matter what industry you are in (service or manufacturing) – it can be a restaurant, consultancy, manufacturing company, government entity, etc. There are other standards based upon ISO 9001 for a few specific industries.
• It is NOT a standard for products. It does not define product quality.  This is a process-based standard: you use it to control your processes, then your end product should meet the desired results.
• It is NOT a personal Standard – a person cannot get certified to ISO 9001, instead an organization or company becomes certified. Individuals, however, CAN become an ISO 9001 Certified Lead Auditor after a 5 day training course.  This then allows them to audit other companies.
• Establishing, ensuring the continuity and certifying the Quality Management System enables the company to improve company's commercial performance and to enhance its permanence in the market.