Concurrent user

[1] Keeping track of concurrent users is important in several cases.

As system performance may degrade due to the complexity of processing multiple jobs from multiple users at the same time, the capacity of such a system may be measured in terms of maximum concurrent users.

For example: Company X buys software and pays for 20 concurrent users.

The night workers share 125 of the day users' licenses to use the system.

The available options for licensing are entirely at the discretion of the vendor selling the product.