Using effective automated testing tools for web application testing enables the execution of tests and compares actual test results with predicted or expected results. Especially while browsing certain websites, users at times might encounter many error messages or some bugs which hamper the readability and the usability of the website, and the users do not patron such web apps. These sort of errors and bugs cause a lot of impact on businesses as they might lose valuable customers.
https://www.testingxperts.com/blog/web-application-automated-testing