The Dutch Digital Heritage Network (NDE) and the Netherlands Coalition for Digital Preservation (NCDD) consist of partners in a number of sectors: science, archiving, libraries, art and broadcasting. In all these sectors the NDE and NCDD members are faced with many different aspects of software obsolescence, in agreement with the rapidly growing interest in software sustainability. The partners therefore quickly need more insight into this matter in order to be able to dedicate funds for a first quick inventory of the issues at stake. But the question is whether Software Sustainability is a matter of largely coinciding issues and challenges across the NCDD stakeholders’ domains, or if the differences are larger than the similarities?