Adobe software is primarily a subscription model but certain programs are still available as perpetual purchases. The process for ordering the subscription (Creative Cloud) changed drastically in Summer 2017 and is now managed centrally by UWIT.
CDW sells a perpetual Adobe Educational Acrobat Pro license (also called Student and Teacher Edition on other sites) that is available via eProcurement. You will need to submit a Purchase Request (https://www.ess.washington.edu/content/intranet/ess_handbook.php#Purchasing) to Eunice to take advantage of the UWIT discount. As of 2019-11-25 the cost is $110+tax with UWIT pricing and the URL is https://www.cdwg.com/product/ado-edu-acrobat-pro-2017-l3/5630811 but both are subject to change without notice.
UWIT now manages Adobe Creative Cloud purchases directly. All licenses rollover July 1st each year and costs are prorated depending on the month you purchase them. They have both single application licenses as well as Creative Cloud licenses which covers all current Adobe software. Licenses are purchased by sending UWIT an email in their requested format (bottom of this page). The department portion of the requested email is below. Please note they also have a spreadsheet if you purchasing multiple licenses at once which can be useful for bulk renewals.