What is manual testing vs. automation?

Manual testing and automation testing are two key approaches in software quality assurance. Manual testing involves human testers executing test cases without the use of scripts or tools, allowing for exploratory, usability, and ad-hoc testing. In contrast, automation testing uses specialized tools and scripts to run tests automatically, improving speed, accuracy, and repeatability. While manual testing is ideal for short-term or complex user experience scenarios, automation is better suited for regression, performance, and large-scale testing. Both methods complement each other, and a balanced strategy ensures higher software quality, faster releases, and efficient defect detection.