Hosted by the OCHA Centre for Humanitarian Data and supported by CRAF'd, The Hague, the Ministry of Foreign Affairs of the Netherlands, and NORCAP, the inaugural Humanitarian Data Forum celebrated a decade of the Humanitarian Data Exchange (HDX) platform and laid the groundwork for the future of data-driven humanitarian action. The forum gathered over 130 participants from UN agencies, NGOs, governments, donors, the private sector, and academia to foster a collaborative data ecosystem.