The Dolby Atmos Production Suite is authorized by an iLok license, which will be deposited into your iLok account when you purchase the software.   Note for existing users that the name of the iLok authorization has changed from "Dolby Rendering and Mastering" to "Dolby Atmos Production Suite" with version 3.0.   This name change will be reflected the next time the iLok is synced to the iLok account.   While the name has changed the license itself it the same and no new license is required.