Retesting is a focused testing activity performed after a defect has been fixed to ensure that the issue is actually resolved. Unlike broader testing approaches, retesting targets specific bug fixes and validates them under the same conditions where they originally occurred. This makes it a critical step in maintaining software quality, especially when quick fixes are pushed into active development cycles.
In practice, teams often discuss how retesting differs from regression testing. While regression testing checks whether recent changes have affected existing functionality, retesting is much more precise—it confirms that a particular defect no longer exists. This distinction is important because skipping proper retesting can lead to unresolved issues slipping into production, even if other parts of the system appear stable.
Another common discussion point is how to make retesting efficient without slowing down delivery. Many teams rely on automation and tools like Keploy to quickly revalidate fixes using real scenarios. This ensures faster feedback, reduces manual effort, and helps teams confidently move forward without reintroducing previously fixed bugs.

👉 Reference: https://keploy.io/blog/community/retesting-in-software-testing