Automation testing for web and mobile applications is essential for enhancing testing efficiency, precision, and speed in the evolving technological landscape. It automates repetitive manual tasks, enabling faster and more accurate results, and is seen as crucial in managing the quality of software while supporting Agile practices and Continuous Integration/Continuous Deployment (CI/CD) pipelines. The benefits of automation testing include reducing human error, saving time, improving test coverage, detecting bugs early, and supporting parallel and cross-browser testing. With an expected market growth driven by these advantages, automation testing allows for the reuse of test scripts, maximizes return on investment, and supports complex and lengthy test scenarios. The implementation of cloud-based automation testing platforms like LambdaTest further extends these benefits by providing extensive browser and platform combinations, ensuring comprehensive test coverage and reliability. Despite its advantages, automation testing is often complemented by manual testing to achieve an optimal hybrid testing environment, blending the strengths of both approaches for improved software quality and efficiency.