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eProcurement Ontology

Who uses the eProcurement Ontology?

The eProcurement Ontology is publicly available to users e.g., information system developers or data analysts, who wish to process or consume public procurement data.

What is it for?

The eProcurement Ontology, developed and managed by the Publications Office, maintains consistent terms, definitions, and relations in procurement data. It ensures that all entities processing public procurement data use it consistently.

What benefits does it offer?

The eProcurement Ontology provides a formal, semantic foundation for the creation and reuse of linked open data in the EU public procurement domain. Concepts have defined names and relations to each other so that public procurement data is consistent in meaning i.e., consumption and interpretation, in every stage of data usage: creation, analysis, reporting, and decision making.

Buyers and suppliers who use this standard profit from a simplified and faster exchange of data. Service providers in the private or public sector, who base their services on the eProcurement Ontology, enrich the services they provide to their users by facilitating these exchanges at Member State level.

Why should I use the Publications Office for this service?

Although some Member States may provide ontologies for use at a national level, there are no alternative or competing standards available at the European level.

Are there any prerequisites or constraints?

These standards are platform agnostic, meaning that there are no specific prerequisites or constraints for using them.

How can I use the eProcurement Ontology?

The eProcurement Ontology, produced by the Publications Office, is publicly available on GitHub. For more information on how to access and use these standards you can consult our documentation website at

For questions please contact:

Who maintains this service?

The eProcurement Ontology is maintained by the EC Publications Office.