Which statement best captures the purpose of regression testing in validating performance targets?

• A. To ensure new changes do not degrade existing performance.
• B. To measure only new features.
• C. To collect more data without testing.
• D. To test user interface design only.

Answer: (A)

Regression testing centers on preserving established performance after changes. When code, configurations, or optimizations are introduced, they can unintentionally affect how the system behaves under load. Regression tests re-run the performance scenarios and compare current results to the baselines that define the performance targets. As long as the results stay within the accepted thresholds, you can trust that the new changes haven’t degraded performance. This approach is specifically about maintaining performance targets, not about validating new features, collecting data without testing, or focusing solely on user interface aspects.