Testing of software with actual data and in actual environment is called

Answer: Beta testing — testing performed by real users in an actual or production-like environment using real or realistic data.

• Beta testing: Performed by end users or a limited external group in the intended environment to validate functionality and usability with real data.

• Alpha testing: Internal testing by developers or QA in a controlled environment before release; not the actual production environment.

• Regression testing: Re-running existing tests after changes to ensure existing features still work; not specifically about using actual production data or environment.

• Why this fits: The phrase explicitly mentions using actual data and the actual environment, which describes beta testing where external users validate the product under real conditions.