Center for Information Technology Services

What is a License with Concurrency?

Concurrent licensing is a software license model that is based on the number of simultaneous users accessing the program. This model deals with software running on a server where users connect via the network. For example, in a 5-user concurrent license, once 5 users are logged on to the program, the 6th user is prohibited. When any one of the first 5 log off, the next person can log on.

Concurrent licensing is offered by Adobe for certain programs, and is most often used in computer labs. For example, if you have a lab of 20 computers and only wish to have any 5 computers accessing the program at a given time, purchase 5 licenses w/concurrency. This is more cost-effective than purchasing 20 individual licenses for each computer.

This licensing model is NOT to be used on standalone workstations. It must only be used in a server environment and must be managed appropriately. Adobe recommends using KeyServer to control how many computers access certain programs, but any similar program will be sufficient.

For concurrent license purchases, software must be picked up and installed by your departmental IT Support person.

For software related questions please contact the Software Licensing Office at 410-706-8166 or with software questions.

For all other questions, contact Stephen Giermek at 410-706-8166 or,
Fran Dominguez at 410-706-7447 or,
or Paul Petroski at 410-706-8338 or