The document outlines the concept of an IOC Data Architecture proposed to optimise connections between existing IOC elements to enhance the access and discovery of IOC data, and strengthen delivery of ocean data for multiple services and applications. This concept proposal contains details on this architecture and how the unique IOC set of data assets can connect and integrate to deliver something much more powerful than the sum of its parts. This proposal was developed for the 33^rd session of the IOC Assembly (UNESCO, 25 June–3 July 2025) by the interim IOC Data Architecture Working Group, April 2025.

English only. An outline of the proposal was presented to the 33rd session of the IOC Assembly (June 2025) under item 3.4.3 (document IOC/A-33/3.4.3.Doc(1))