olemus
sertifikaadi väljaandmine
Merriam-Webster, certify, verb:
1: to attest authoritatively
ISO/IEC 17000:
vastavushindamise objektiga seotud kolmandapoolne atesteerimine, välja arvatud akrediteerimine
= third-party attestation related to an object of conformity assessment, with the exception of accreditation

ülevaateid
https://en.wikipedia.org/wiki/Certification
https://blog.clevercompliance.io/product-compliance/4-types-of-product-certification-often-required-and-recognised-worldwide/
https://www.iso.org/certification.html
https://www.isoqsltd.com/faq/
https://www.indeed.com/career-advice/career-development/what-are-certifications