Why is the user in the "terms and conditions" called a "tester"?

> this pilot agreement ("agreement") is a legal agreement between you ("tester") and tara intelligence inc. ("company"). company is developing a software platform product offering for managing product development lifecycles ("company platform"), and this agreement governs tester's use of the company platform. by accessing or using the service or by clicking the "i accept" button, tester acknowledges that tester has reviewed and accepts this agreement.