From Samvera Virtual Connect 2024, Debra Denault (Index Data) and Marc Hoffeditz (Boston Library Consortium) - In 2021, the Boston Library Consortium’s Board of Directors approved the implementation of controlled digital lending (CDL) as a mechanism for interlibrary loan (ILL). While many localized technical solutions were developed at that time, no technology existed to enable CDL for ILL amongst a library consortium. After several years of development and collaboration with Index Data, the BLC is launching its long-awaited CDL for ILL program utilizing ReShare CDL, a module of the open-source software championed by Project ReShare. Hyku for Consortia has been an essential tool to complement ReShare CDL and facilitate our workflows by hosting digital surrogates and providing temporary controlled access to digital materials. This presentation will provide an overview to the BLC’s journey towards this unique implementation of CDL, explore the integration of Hyku in our overall workflow, and discuss the challenges of adapting these technologies at scale.