ISO 20121 is a beacon for sustainable event management, guiding organizations to seamlessly integrate sustainability into every facet of their event planning and execution. With a keen eye on social, economic, and environmental impacts, this standard is pivotal for events that aspire to leave a lasting positive legacy. This standard applies to events of all types and sizes, encouraging organizations to manage social, economic, and environmental impacts responsibly. ISO 20121:2024 is the latest version of the framework, highlighting new focuses on human and children’s rights, along with event legacies. As a framework, ISO 20121 helps organizations develop and maintain sustainable event management processes.