The three main types of test management artifacts are: Test Plans: These documents outline what needs to be tested, how the testing will be done, and who will do it. They serve as a roadmap for the testing process. Test Cases: These are specific conditions or variables under which a tester will determine whether a system or software application is working correctly. Each test case has steps to be followed and expected results. Defect Reports: These reports document any bugs or issues found during testing. They typically include details about the problem, steps to reproduce it, and its impact on the system. These artifacts help in organizing and managing the testing process effectively.