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Acquiring E-books – Does (Should) Workflow Play a Role?

The methods in which e-books can be purchased vary greatly compared to print
 books. In the past, a print book was purchased either as an individual title (firm
 order) or through an approval plan. Once the books were received, there was little
 deviation in how the items were processed – purchase orders were created, books were
 processed, invoices were input and paid. However, with e-books, the work is more complex
 and there are a many ways to purchase e-books – firm order, Demand (or Patron) Driven
 Acquisiton (DDA), Evidence Based Acquisition (EBA), yearly front-file purchases,
 back-file purchases, or subscription to e-book packages. Each of the methods involves a
 workflow that goes from easy to somewhat complex. This begs the question of whether the
 acquisitions workflow can or should influence how e-books are purchased.