Ambitious City Promises was implemented by ICLEI – Local Governments for Sustainability and funded by the German Federal Ministry for the Environment, Nature Conservation and Nuclear Safety (BMU) through the International Climate Initiative (IKI). The ICLEI World Secretariat was responsible for project management and coordination. ICLEI Southeast Asia Secretariat and ICLEI East Asia Secretariat were also implementing partners. The Seoul Metropolitan Government was a supporting partner.