Difference between Regression Testing and Confirmation Testing?

Question

Accepted Answer

Regression testing is retesting of previously tested functionality, while confirmation testing is testing to ensure a defect fix.

Regression testing is performed to ensure that changes or fixes in the software do not introduce new defects or impact existing functionality.
Confirmation testing is performed to verify that a reported defect has been fixed and no longer exists in the software.
Regression testing focuses on the broader scope of the system, while confirmation testing is more specific to the fixed defect.
Regression testing is typically performed after every software change, while confirmation testing is performed after a defect fix.
Regression testing involves running a comprehensive set of test cases, while confirmation testing may involve running only the test cases related to the fixed defect.

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