Testing Automation is the use of automated tests to improve software quality and efficiency. Automated tests are scripts or tools that execute predefined tests on software applications to verify their functionality, performance, and security. Testing automation helps detect bugs and issues early in the development cycle, reducing the time and effort required for manual testing. It also enables continuous testing as part of CI/CD pipelines, ensuring that code changes are thoroughly tested before deployment. Tools like Selenium, JUnit, TestNG, and Jenkins are commonly used for testing automation, allowing teams to achieve faster release cycles and higher software quality.