Apple Volume License Program
Apple has expanded Volume License Program (VPP) to now include Managed Distribution of Apps as of 11/2013. Under this new feature administrators are now able to provide those codes to end-users with the ability to revoke those licenses at a later date. What is very exciting is now VPP extends not to just the iOS App Store, but also the OS X App Store, and the iBookstore (however, books CANNOT be revoked).
Details are listed here:
For purchased VPP redemption codes and converting them into managed licenses, please read this article:
( thanks to UCLA’s Apple technical rep Tim Parker for the update! )