Question

What’s the difference between manual testing and automated testing?

Answer 1

Manual Testing	Automated Testing
A human executes the test cases one by one, without any software assistance.	Tests are executed by a testing tool or framework, without human assistance.
Useful for non-repeatable tests that involve human ingenuity, participation, and domain experience.	Useful for repeatable tests where the software feature under test doesn’t change frequently.
Good for accessibility and usability testing, as the tester can test the software from an end-user’s perspective.	Good for testing regression issues to make sure that the software didn’t break after introducing new changes.
Can be slow and time-consuming, and subject to human errors and misjudgment.	Since it’s run by a computer, automated tests are fast and free from errors, given that we are testing the right thing.
It’s possible to test the software in a randomized manner, also known as exploratory testing.	Exploratory testing is not possible in automated testing.
UI problems and inconsistencies are easily spotted by a human tester.	Unless it’s programmed for that, the automated testing cannot discover and report the UI problems.
It’s very difficult, rather impossible to test the software under extreme load to conduct performance testing.	Performance testing can be easily done with automation testing.
The tester doesn’t need prior programming knowledge.	To write automated tests, the tester needs to have prior programming knowledge.