Jenkins and Selenium integration allows for efficient testing of web applications across different browsers and operating systems. Jenkins provides a platform for continuous integration and continuous delivery (CI/CD), while Selenium automates the testing process. The integration enables organizations to automate their test cycles, making it faster and more reliable. With this integration, developers can focus on writing code, and the testing is automated, ensuring that the application works as expected across various platforms. Jenkins supports multiple plugins for achieving project requirements, including Selenium WebDriver, which facilitates cross-browser testing and parallel execution of tests. The integration also enables alerting users via emails regarding stability issues with the build, providing real-time feedback to developers.