The document discusses OAPEN, an organization dedicated to supporting open access for monographs. It describes OAPEN's services including the OAPEN Library, which hosts open access books, and a new deposit service. The deposit service aims to increase discoverability and visibility of open access publications, provide quality assurance and preservation, and integrate open access monographs into library services. The document outlines benefits for libraries, publishers, and researchers, and provides examples of participating organizations and proposed deposit workflows.