Which of the following is not a typical use of exploratory testing?

Exploratory testing is characterized by its adaptive approach, where testers actively explore the application without predefined test cases, allowing them to learn more about the software and find defects. A typical use of exploratory testing involves scenarios where requirements are unclear or incomplete, as it enables testers to investigate and discover issues that may not have been initially considered.

In this context, performing regression tests on stable software is not a typical use of exploratory testing. Regression testing is generally a systematic approach aimed at validating that previously developed and tested software still performs after a change, such as bug fixes or enhancements. This process often relies on defined test cases to ensure thorough coverage and repeatability. Exploratory testing, by nature, doesn't lend itself to this structured requirement because the focus is on unrestricted testing to uncover unforeseen defects rather than on verifying existing functionalities against predefined criteria.

Therefore, while exploratory testing is useful in identifying user interactions and discovering missing functionalities, it is less appropriate for systematic regression testing on stable software, as that requires a more rigorous and repeatable approach.