a perpetual device Client Access License (CAL) with software assurance, which is the right for one device to connect to any version of the server released by the date in the item description.
You will receive nothing tangible as a result of the purchase of this item; your order confirmation or receipt is your proof of license.
Microsoft Exchange uses the server/CAL licensing model. Each instance of the server software must be licensed and each user or device accessing the server must be licensed. UW-Madison owns Standard CALs under the terms of our Microsoft Enrollment for Education Solutions (EES; https://kb.wisc.edu/page.php?id=5084).