Cross-browser testing with Selenium WebDriver ensures your application performs well across various browsers. Best practices include using WebDriver’s built-in methods to interact with different browsers like Chrome, Firefox, and Safari. For efficient testing, implement parallel execution using Selenium Grid or tools like BrowserStack to run tests across multiple browsers simultaneously. It’s also important to maintain browser-specific configurations by setting up browser profiles to manage settings effectively. Ensure your locators are cross-browser compatible to avoid failures, and integrate tests with CI tools like Jenkins for seamless automated testing. To further enhance your skills, consider enrolling in a Selenium WebDriver course for deeper insights into cross-browser testing techniques.