Note: As of November 14, 2019, IST has a small number of perpetual licenses available through the IST Webstore. What is the impact? For new purchases of Acrobat Pro DC, departments/units will now have to purchase a subscription for Acrobat Pro DC directly from the Adobe online store or the re-seller, Softchoice. What is happening? The Adobe Acrobat Pro DC licensing model has changed to a subscription-based model.