What is the difference between manual testing and automated testing?

Manual testing and automated testing are two approaches to software testing. The main difference between the two is the involvement of a human tester. Manual testing involves a human tester manually executing test cases, checking the software against expected results, and reporting any defects or bugs. It is a time-consuming and error-prone process, but it is often used when it is necessary to test the software's user interface and overall user experience. Automated testing, on the other hand, uses software tools to automatically execute test cases, check the results, and report any defects or bugs. Automated testing is faster and more reliable than manual testing, but it is limited to testing code logic and functional requirements, and it does not test the software's user interface. Automated testing is best used for repetitive, time-consuming, and complex tests, and for regression testing.