This update was not merely a revision; it was a fundamental transformation. While the 2012 version acted as a "glossary" aligning terminology with the PMBOK Guide, the 2021 version pivots toward a , acknowledging the diversity of project types (from construction to software development) and the need for flexibility over rigid prescriptivism.
At the heart of the standard are nine principles. These principles apply regardless of the methodology (PRINCE2, PMBOK, Scrum) being used. Iso 21500 Pdf 2021