Different types of documentation serve different roles in the process of testing. A test plan gives an overview of how the tests will be conducted, including resources to be used and scheduling. On the other hand, a test scenario outlines specific conditions or functionalities that need to undergo examination. Conversely, detailed steps and expected outcomes for particular tests are provided by test cases, while bug reports document defects or any other issues found during testing. Test reports summarize findings from tests carried out while requirements documentation in software testing states the exact needs and expectations of the software, which will be verified through testing.