ISO 9001:2015 certification issued by International Organization for Standardization is a quality management standard. It applies to all types of organizations. It doesn't matter what size they are or what they do.
It can help both product and service organizations achieve standards of quality that are recognized and respected throughout the world. Standards often define the characteristics of a product or service, and the way to measure or test them. Consumer representatives aim to influence these characteristics so that products and services provide higher levels of quality.