ISO 9000 is a series, or family, of quality management standards, whereas ISO 9001 is a standard within the family. The ISO 9000 family of standards also contains an individual standard named ISO 9000. It is the international standard for a QMS (Quality Management System). To be certified to the ISO 9001 standard, a company must follow the obligations mentioned in the ISO 9001 Standard. The standard is used by organizations to demonstrate their ability to consistently provide products and services that meet customer and regulatory requirements and to demonstrate continuous improvement. There are various documents in the ISO 9000 family of standards, but ISO 9001 is the only standard in the 9000 series that requires certification.