Libraries, museums, and archives have increasing dependency on not-for-profit and commercial digital platforms such as Preservica, MetaArchive, APTrust, Samvera to support the curation, discovery, and management of digital content. The long-term stewardship of digital materials depends not only on the technical resiliency of preservation systems, but also on the strength of financial and organizational sustainability of these systems and their providers and their ability to meet the needs of their clients (user base). With funding from the Institute of Library and Museum Services (IMLS), Ithaka S+R is conducting a 2-year research project to examine and assess how digital preservation systems are developed, deployed, and sustained. The purpose of the presentation is to discuss the sustainability attributes for assessing the effectiveness and durability of preservation and curation systems and stewarding organizations. After sharing the study’s key findings, there will be a roundtable discussion about the key challenges in selecting and implementing digital preservation and curation systems from the heritage sector’s perspective.