- The document summarizes the findings of a feasibility study on developing an open educational resource (OER) infrastructure across educational sectors in Germany. - It identifies the need for a federated network of reference systems rather than a single central repository, to overcome the fragmented landscape of existing repositories and enable cross-sectoral sharing of OERs. - Key recommendations include establishing a Metadata Exchange Service to facilitate exchange between referatories and sectors, and coordinating stakeholders to develop common standards and ensure an open informational ecosystem.