PCOV is a lightweight and fast code coverage driver that has significantly improved my Test-Driven Development (TDD) workflow. By generating precise coverage reports, PCOV highlights tested and untested areas of code, helping identify gaps in test cases. Unlike Xdebug, which offers broader features like debugging and profiling, PCOV focuses solely on code coverage, making it faster and ideal for integration with CI/CD pipelines and tools like SonarQube. Its simplicity and performance make it a valuable tool for ensuring code quality and maintaining robust test coverage.