This report was produced for the "Developing a Data Trust for Open Access Ebook Usage" project funded by The Andrew W. Mellon Foundation. It documents the current state of stakeholders, metadata and usage data flows, and supply chain for OA monographs. Supply chain gaps, challenges, and opportunities are identified. This final report version is based on information collected in 2020 through questionnaires and semi-structured interviews with stakeholders and subject-matter experts representative of the supply chain. Interviewees represented publishers, academic librarians, aggregators, publishing platform providers, online book distributors, and others. Preliminary report findings were made available for public comment from 16 October 2020 - 9 April 2021 and shared in conferences and industry groups. Feedback is incorporated into this final version.

This work was made possible through grant funding provided via the "Developing a Data Trust for Open Access Ebook Usage" project funded by The Andrew W. Mellon Foundation.