Because of security, we want to make sure each test can not be affected by a previous test. If you'd run multiple tests on 1 VM, then one customer could change

Because of security, we want to make sure each test can not be affected by a previous test. If you'd run multiple tests on 1 VM, then one customer could change a property on the VM or alter a state that might cause the next test on the VM to fail. By providing a pristine VM per test, we guarantee that each test cannot be affected by any previous test.