The Decade Coordination Office (DCO) for Ocean Data Sharing (ODS) was launched on the 1st of June 2023 by Jan-Bart Calewaert, as Lead Manager, for the Intergovernmental Oceanographic Commission (IOC) of UNESCO in the context of the UN Decade of Ocean Science for Sustainable Development. Hosted by IODE, the Decade Coordination Office for Ocean Data Sharing acts as sub-unit of the central Decade Coordination Unit to catalyse and coordinate Decade Actions falling under its scope, assist decade actors with data and information challenges and opportunities, promote cooperation amongst UN and Member State partners, monitor progress, communicate on achievements and mobilise resources.