In the summer of 2021, the University of Arizona Libraries (UAL) implemented Reprint Desk’s Article Galaxy Scholar (AGS), a tool that enables users to order on-demand articles not available through the library’s subscriptions. Typically used as a supplement to interlibrary loan services, AGS was adopted by UAL for a multi-year pilot project to address key questions about the library's collection. The pilot aimed to identify which disciplines would most benefit from faster article access compared to the standard interlibrary loan turnaround time, uncover potential gaps in collection coverage across disciplines, and explore opportunities to improve article request fulfillment times.