The Working Group on “Sustainable Publishing of Metadata” has been active within the Digital Research Infrastructure for the Arts and Humanities (DARIAH) European network since 2016. The working group aims to present and share information regarding ongoing and established projects which deal with the creation, reproduction and sharing of metadata between institutes and researchers within the field of Humanities and Social Sciences. The contributions on this blog will document both the activities of the working group as well as present projects dealing with this use of metadata. We wish to realize a collaboration between European and pan-European research infrastructures and in this way stimulate the exchange of expertise between them as well as projects led by partners. This working group aims to disseminate best practices and the use of standards (EAD, DDI, RIC, IIIF, ...). Its members are (next to DARIAH), among others, involved in the research infrastructures CESSDA (Consortium of European Social Science Data Archives), EHRI (European Holocaust Infrastructure), APE (Archives Portal Europe), Europeana,...