Description: Application testing is the process of evaluating an application to ensure it meets specified requirements. This process is fundamental in the software development lifecycle, as it allows for the identification of errors, failures, and areas for improvement before the application is released to the market. Testing can cover various aspects, including functionality, performance, security, and usability. Through different techniques, such as unit testing, integration testing, and acceptance testing, the goal is to ensure that the application not only works correctly but also provides a satisfactory user experience. The importance of application testing lies in its ability to reduce long-term costs, improve software quality, and increase customer satisfaction. In an increasingly competitive business environment, organizations must ensure that their applications are reliable and efficient, making testing an essential component of modern development practices, including agile and DevOps methodologies. Furthermore, with the growing complexity of modern applications, which are often deployed in various environments and utilize different architectural styles, testing has become more critical than ever, requiring innovative approaches and specialized tools to address the challenges posed by these designs.