== Specific definitions of an open standard ===== ITU-T definition ===The ITU-T is a standards development organization (SDO) that is one of the three sectors of the International Telecommunications Union (a specialized agency of the United Nations).
Znotraj teh organizacij se samo IETF in ITU-T eksplicitno zavzemajo, da so njihovi standardi »odprti standardi«, medtem ko drugi proizvajajo samo standarde.