The Concurrent User pricing model only takes into account a company's actual usage of purchased or rented licenses. You only need as many licenses as employees who are logged into the system simultaneously.
For example: A company wants to use software in customer service. The company has three teams of 10 employees each, who take shifts to cover customer service operations. In many products from other manufacturers, the total number of these 30 users, known as 'Named Users,' is typically licensed. However, the Concurrent User model in this example only requires 10 licenses, as a maximum of 10 employees work with the system simultaneously during each shift.