Jenkins is a CI/CD tool that automatically triggers your Selenium scripts whenever a developer pushes new code to the repository. This provides immediate feedback on code quality. Jenkins can be configured to: 1. Run tests on a schedule, 2. Run tests on code push, 3. Run tests on pull requests, 4. Generate HTML reports, 5. Archive screenshots/logs. Jenkins typically runs tests in 'Headless Mode' (no display) for performance.
Without Jenkins: Developer writes code, manually runs tests, waits for results. With Jenkins: Developer pushes code, Jenkins automatically runs tests in seconds, reports results. Immediate feedback!
A Jenkins build fails because 'Chrome failed to start'. But it works on your laptop. What's wrong?