Automated UI testing plays a critical role in ensuring high-quality application development by verifying that user interactions with the application's UI behave as expected. This type of testing saves time, increases test coverage, and limits the potential for human error, making it an essential aspect of software development. However, implementing automated UI testing can be complex due to frequent changes in user interfaces and diverse environments, requiring careful consideration of tools and technologies. By choosing the right tools, such as Selenium, Appium, or Cypress, organizations can develop high-quality test scripts that provide accurate representations of their application's functionality, ultimately leading to a better user experience.