Problem addressed
Different stakeholder groups in marine science use various metadata schemes and ontologies. The Metadata Broker service supports configuring and providing a common denominator for the metadata schema at data collection level, while in Blue-Cloud 2026 the Data Discovery & Access Service (DD&AS) will be expanded with also a Semantic Broker service, using ontologies, in order to provide common vocabulary terms in the metadata output.Also, it will be explored how the common denominator of metadata fields and their semantic support could be expanded in cooperation with the BDIs.