The momentum to measure South-South cooperation is growing rapidly, spurred by the endorsement of SDG indicator 17.3.1 and the voluntary ‘Framework to Measure South-South Cooperation’. Developed by the global South, the Framework aims to provide data on South-South cooperation to enable first-ever globally inclusive information on international development support by reflecting the realities of the global South. To unlock its full potential, significant support, technical training, harmonized tools, and targeted assistance, is needed for countries.