11 Association of Research Libraries Research Library Issues 302 — 2021 This metadata includes: • Information about who published the work (names, unique IDs), their roles (creators, contributors), and where they are affiliated • Information about the work itself (abstract, work type) • Information about related works (data, older versions, series, dissertations, preprints) • Information about who funded and/or sponsored the underlying research • Information about copyright and licensing • Information about referenced works Enriching DOI metadata provided to Crossref and DataCite optimizes the work for greater discoverability and therefore reusability. Systems that harvest from Crossref and DataCite can index the additional metadata in the DOIs. Works can then be searched to find specific authors, or works associated with a particular institution or funder. Reference lists and related works can be analyzed to provide a fuller picture of the work in context. Data Services Researchers and research stakeholders today must navigate an array of policies and requirements around sharing data and following best practices for data publication—the FAIR principles.6 While the landscape of data management and data sharing policies has been widely discussed, less frequently addressed is the role that persistent identifiers can play in navigating these requirements and adhering to best practices. To illustrate how this can work, let’s take the example of a single DOI for a data set. At a bare minimum, this DOI could function as a unique, long-lasting reference to the data set in case the location where it is stored changes over time. The existence of the identifier alone can make a significant difference in promoting the stability of this scholarly resource over the long term.