ISO 20121 is a new global sustainability standard for event management that was influenced by sustainability practices at the 2012 London Olympics. It provides a framework to help event organizers reduce environmental impacts and promote social inclusion. Over 30 countries were involved in developing the standard, which certifies that events are meeting targets in areas like transportation, waste management, and employment. London 2012 helped catalyze the creation of ISO 20121 and was one of the first events certified under this new international standard, leaving a legacy of more sustainable practices in the events industry.