The document discusses developing an indicator framework to measure progress towards achieving the UN Sustainable Development Goals (SDGs) at the subnational level in OECD regions and cities. It describes a process of co-designing the indicator framework with stakeholders, identifying relevant targets and indicators, defining end values for indicators, and developing a composite index for each SDG. Preliminary results are presented showing the distance of OECD regions from the 2030 end values by goal. A new online tool is introduced that will provide overviews and data for selected regions and cities to monitor their progress relative to country and OECD averages.