Who: Association of Canadian University Publishers (ACUP) in cooperation with the Ontario Council of University Libraries (OCUL) using OCUL's "ScholarsPortal" hosting platform
What: Over 500 ebooks published by ACUP publishers, on a wide variety of subjects. UPEI's purchase starts with 2014 and will continue through the release of the 2017 books.
Where: ScholarsPortal Ebooks Search
Note: UPEI only provides access to 2014+ ebooks on this platform, not everything you might find on it.