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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.

The DDA program will end August 15, 2017.


A centrally-managed subscription to ProQuest Ebooks Academic Complete (formerly ebrary Academic Complete), added in September 2014, dramatically expanded the total number of e-book titles available to all Alliance libraries. Academic Complete complements the Alliance’s publisher-focused Evidence-Based Acquisition programs by providing an extensive number of back list titles from multiple academic publishers.

Evidence-Based Acquisitions: Wiley

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.

Evidence-Based Acquisitions: Taylor & Francis

In fiscal year 2018, Taylor & Francis became the second vendor to partner with the Alliance in an evidence-based acquisitions program. Through it the Alliance has DRM-free access to Routledge e-books on the Taylor & Francis platform and to CRC Press e-books on the CRC platform, for publications with copyright dates of 2013 and later. At the end of the year the Alliance will choose which titles it wants to own perpetually based on vendor usage data.

Frontlist Collections Purchase with Backfile Access: Oxford University Press and University of California Press

For 12 months beginning with the June 2017 releases, the Alliance is purchasing outright all new Oxford and UC e-books, DRM-free, as they become available on the University Press Scholarship Online (UPSO) platform, excepting some reference works. In addition, the Alliance will have DRM-free access to the complete backlist of these publishers on UPSO.

Annual Reports



Members may use their Electronic Resources login credentials to access the following licenses. If you need access to the files but lack a username and password, contact eresources@orbiscascade.org.