How often should regression testing be conducted?

Regression testing should be conducted regularly and systematically, especially after making changes to the code, to ensure that new changes do not disrupt existing functionality.

The frequency depends on the development process and release cycle:

• With each release: regression tests must be run before releasing a new version.
• After each significant change: if bugs are fixed or new features are added.
• Within CI/CD: automated regression tests can be run with each commit or pull request.

Thus, regression testing is an ongoing process that helps maintain product quality at all stages of development.