At their High-Level Meeting (HLM) in 2020, members of the OECD Development Assistance Committee (DAC) set out a number of commitments and aspirations to align development co-operation with the objectives of international agreements to fight climate change and protect the environment. One year later, this report documents the individual and collective steps taken to give effect to the four voluntary commitments set out in the HLM Communiqu. It provides information on provisions and actions taken by DAC members to systematically integrate international environment and climate goals into development co-operation, to pursue more coordinated approaches, to support the transition of developing countries towards sustainable development pathways, and to better address the particular needs of Small Island Developing States.