The Testdriver Client is a small application that enables the Testdriver service to communicate with a PC.
You need to install and run the Testdriver Client on each system that you want to test. The Client runs in the background and connects the system to the Testdriver service.
You can download the Testdriver Client during the tutorial or by clicking on the profile icon in the top-right corner of the screen. There are separate client apps for PCMark 10 and the CPU Health Test.