Selenium is a widely used open-source framework for automated browser and cross-browser testing, allowing developers to simulate user interactions on websites using various programming languages such as Java, Python, and C#. While local testing infrastructure can be costly and limited in coverage, cloud-based Selenium testing offers scalability, cost-effectiveness, and enhanced test performance by utilizing resources on-demand. Platforms like LambdaTest facilitate Selenium testing on the cloud, providing capabilities for parallel test execution and extensive browser and OS coverage, enabling faster test results and improved test management through CI/CD integration. These cloud-based solutions support multiple programming languages and tools, offering a more efficient and comprehensive approach to ensuring web application quality across diverse devices and environments.