The term Digital Humanities (DH) has become established in most humanities disciplines in recent decades; numerous projects have since then collected and curated digital objects in extensive databases, applied digital methods to interpret and analyse them, and used novel ways to present their findings and hypotheses on the Web. In view of the substantial digital heritage of the digital humanities, one of the central challenges is now the question of how the long-term reuse of these valuable research data can be made possible in the face of outdated technology and increasingly expensive maintenance.