Credit Model - The Library pays for a specific amount of views for the E-Book.
Subscription Model - The Library pays an annual fee to retain access to the title.
Single User License – The E-Book can be read by one user at a time.
Three User License – The E-Book can be read by three users at a time.
Unlimited License – There are no limits to the number of users at any one time.
Demand Driven Acquisition – DDA are titles that the library pays for once they have been activated and used by a patron.
Enrolment Model - Every student gets their own copy for a specific course.