Certification…Certification can be a useful tool to add credibility, by demonstrating that your product or service meets the expectations of your customers. For some industries, certification is a legal or contractual requirement.ISO does not perform certification.At ISO, we develop International Standards, such as ISO 9001 and ISO 14001, but we are not involved in their certification, and do not issue certificates. This is performed by external certification bodies, thus a company or organization cannot be certified by ISO.

Source: Certification – ISO