The purpose of the meeting is to share country experiences on implementing actions to address the social determinants of health (SDH) for advancing health equity, to reflect on lessons learnt during Phase I of the SDH Initiative (2020-2024), and to finalise the joint proposal and plan of work for Phase II (2025-2028). The World Health Organization (WHO) and three core partners began collaborating on the SDH Initiative in 2019. The collaboration involves WHO (three levels); the University College London/Institute of Health Equity (UCL/IHE); the University of Lausanne/UNISANTE (UNIL/UNISANTE); and the Swiss Agency for Development and Cooperation (SDC). The SDH Initiative supports scale-up in action on SDH in WHO, globally and in countries.