This document summarizes a webinar about the COP15 sustainability report and the Copenhagen Sustainable Meetings Protocol project. The webinar featured presentations by Jonathan Cohen from Visit Denmark, Jan Christoph Napierski from the Danish Ministry of Foreign Affairs, and Guy Bigwood from MCI Group. They discussed the COP15 sustainability report, which evaluated the economic, social and environmental impacts of hosting the 2009 UN climate conference. They also presented on the Copenhagen Sustainable Meetings Protocol, a framework to help organize large, complex meetings in a sustainable way. Finally, they discussed the legacy of COP15 in making Copenhagen a leader in green infrastructure, business, transport, food, citizens and meetings.