How the client and virtual users stands in terms of license?
Client Refers to, After installing & Starting the QEngine, How many QA/Testing persons from different machine can connect to respective QEngine Installation for testing. Here QEngine base price under each category would be multipled by the number of clients for the total price. Virtual User Refers to, Its related to performance testing only. After installing & Starting the QEngine, In QEngine Web Performance Tool How many virtual users load can be generated to the application under load test by each QA/Testing persons (Client) from this installation. Here QEngine base price under each category would be differ with respect to number of virtual users.