As Advancing Frontier Research In the Arts and Humanities (ATRIUM) is a project that exploits and strengthens complementarities between four leading European infrastructures (DARIAH, ARIADNE, CLARIN and OPERAS), data management plays a crucial role in the project’s conception. Namely, ATRIUM is dedicated to improving the metadata quality of existing catalogues and repositories, consolidating service portfolios and promoting the use of standards and FAIR (Findable, Accessible, Interoperable, Reusable) principles. As such, many of ATRIUM’s tasks and work packages are directly designed to accommodate and facilitate FAIR data. With the aim to make a groundbreaking contribution to the consolidation and expansion of services to cover all phases of the research data lifecycle, ATRIUM also follows robust data management practices aligned with Open Science.