 The challenge of achieving syntactic and semantic interoperability for efficient online processing of big Earth observation data remains unsolved. The proposed system combines world models with OGC web processing services to provide technical interoperability, allowing experts from different domains to collaborate on complex analyses. Users can connect the world models online to the data, which are stored as 3D spatiotemporal data cubes, making it accessible to non-experts and useful for extracting valuable information from EO and other gridded data sets. This article was authored by Martin Settmonds, Dirk Teder, Stefan Lang, and others.