The document discusses the Orbis Cascade Alliance's transition from demand-driven acquisition (DDA) of e-books to evidence-based acquisition (EBA) with Wiley. Some key points: - The Alliance, consisting of 39 academic libraries, previously used DDA with EBL and a subscription package with Ebrary to build its e-book collection. - In 2016, the Alliance transitioned to an EBA model with Wiley to address challenges like short-term loans and fluctuating title pools with DDA. - Early usage data from the first year of the Wiley EBA program shows significantly higher monthly full-text downloads compared to the previous year. - The Alliance will now