When designing educational services, controlled vocabularies are often essential for capturing resources so that they become discoverable and reusable for various educational stakeholders. However, due to the multitude of different needs in a distributed educational landscape, reusable vocabularies for the education sector are not immediately accessible.

In an increasingly digital and networked educational landscape, various stakeholders face the challenge of making their services and platforms interoperable. Without standardized vocabularies, fragmented isolated solutions emerge, hindering data exchange and collaboration. The ”Compendium - Educational Metadata (en)” (Oellers & Rörtgen 2025) has already highlighted the diversity of stakeholders and existing vocabularies. This database addresses the need for systematizing a market overview.