CAL stands for Client Access License, which is ..."a license that gives a user the right to access the services of the server." (-Microsoft)
CAL stands for Client Access License, which is ..."a license that gives a user the right to access the services of the server." (-Microsoft)
There are two main types of CALs, User CALs and Device CALs, which measure license requirements in different manners. User CALs define the total number of users (typically tracked by unique accounts) that may be connected to the service at a given time. Device CALs define the number of devices (regardless of who is using them) that may access the service at a given time.