The configurations that the tester should consider while testing a web application include:
Hardware platform: The tester should focus on the hardware since different users use different platforms such as Linux, Mac, and Microsoft.
Browser: Testers should also consider the browser during web testing services since different browsers show different page layouts of the same web application. Also, plugins and browser versions are crucial factors here.
Other configurations to consider include the text size, colour depth, and resolution of the monitor.