Description: The Web Testing Methodology is a systematic approach to testing web applications, aimed at ensuring their functionality, performance, and security. This approach is based on test-driven development (TDD), where tests are designed and executed before the software development is completed. The methodology involves creating test cases that reflect user requirements and system specifications, allowing developers to identify and correct errors early in the software development lifecycle. Additionally, it fosters closer collaboration between development and testing teams, ensuring that all aspects of the application are comprehensively evaluated. The Web Testing Methodology not only focuses on functionality but also encompasses usability, compatibility, and performance testing, making it an essential tool for developing high-quality web applications. Its implementation can enhance end-user satisfaction and reduce long-term costs by minimizing the number of errors that reach production.