What is the difference between regression testing and re-testing?

What is the difference between regression testing and re-testing?

Regression testing and re-testing are two types of software testing techniques that serve separate purposes in the quality assurance process.

Regression Testing

Regression testing is a type of software testing that validates whether new code changes have affected the existing functionality of the application. It involves re-running previously executed test cases to ensure that new updates have not introduced any bugs or errors.

Re-testing

Re-testing, on the other hand, is a process of testing the specific functionalities or modules of the application that have been modified to confirm that the identified defects or issues have been fixed. It focuses on verifying that the reported bugs have been resolved successfully in the latest build.

While regression testing aims to check for unintended side effects of code changes across the entire application, re-testing focuses on verifying the specific areas where issues were previously identified.

Overall, the key difference between regression testing and re-testing is that regression testing ensures that new changes do not negatively impact existing functionalities, while re-testing ensures that identified issues have been successfully resolved.