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Automated vs. Manual Testing - Key Advantage

publish date: 2026/06/19 10:51:12.989964 UTC

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What is the most significant practical advantage of automated testing over manual testing?

Automated tests generate better test cases than human testers in all situations

Automated testing can find all possible defects in a program given enough time

Automated testing is completely free to set up and requires no configuration

Automated tests can be re-run quickly and cheaply every time a change is made, making regression testing practical

Correct Answer

Automated tests can be re-run quickly and cheaply every time a change is made, making regression testing practical

Explanation

The key advantage of automated testing is that tests can be re-run quickly and cheaply every time a system change is made. This makes regression testing practical and cost-effective. Without automation, manual regression testing after every change would be prohibitively expensive in time and effort, leading teams to test less frequently and miss regressions.

Reference

Software Engineering, Ian Sommerville, 10th edition

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