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What began as the Alliance's DDA Pilot in July 2011 morphed into a comprehensive approach to providing a core set of e-books to Alliance libraries and their patrons. At this moment, the Alliance manages a demand-driven acquisitions model, an e-book subscription package, and an evidence-based acquisition pilot on behalf of the consortium.

Demand Driven Acquisitions

The Alliance created the first of its kind consortial demand-driven acquisitions model in 2011. This initiative continues to provide shared discovery and shared purchasing of e-books on behalf of all 37 Orbis Cascade Alliance members. The service is facilitated by a partnership with YBP and ProQuest, and it is generously funded by the consortium membership.

The DDA component of this collection includes titles published in the last three years (currently 2013+), priced no higher than $200, and from a selected list of publishers.


A centrally-managed subscription to ebrary's Academic Complete, added in September 2014, dramatically expanded the total number of e-book titles available to all Alliance libraries. Academic Complete complements the DDA collection by providing an extensive number of back list titles, and it includes titles from publishers that do not participate in the consortium's DDA initiative.

Evidence-Based Acquisitions

The Alliance partnered with Wiley to pilot a consortium-wide evidence-based acquisitions model for e-books. This approach devotes 100% of funds to purchasing titles, focuses on a publisher whose content is consistently well used in the Alliance, and provides front- and back-list title access with no DRM.

Annual Reports