What type of testing is based on the tester's knowledge, experience, and intuition?

Experience-based testing is fundamentally driven by the tester's knowledge, experience, and intuition. This testing approach allows testers to use their insights gained through previous engagements, understanding of the system being tested, and familiarity with similar applications to identify areas that may contain defects or require further validation.

In such scenarios, the tester draws upon their accumulated expertise and instinct rather than adhering strictly to predefined test cases or scripts. This method can be especially effective in agile environments, where flexibility and rapid feedback are vital.

This is different from automated testing, which relies on tools and scripts to execute tests, and scripted testing, which requires detailed test case writing and adherence to those scripts. Furthermore, ad-hoc testing, although it involves less formal structure, is typically less about utilizing extensive prior experience and more about informal, exploratory testing without a specified process or defined objectives.