: Detailed "how-to" guidance for managing projects was moved to a new companion standard, ISO 21502:2020 , allowing ISO 21500 to focus strictly on context and concepts .
In 2021, ISO 21500 was updated to reflect changes in project management practices and to ensure that the standard remains relevant and effective. The updated version of ISO 21500 provides guidance on managing projects in a rapidly changing environment. The update includes a new focus on agility, flexibility, and adaptability in project management. iso 21500 pdf 2021 updated