What is the role of test cases in software testing?

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What is the role of test cases in software testing?

The role of test cases in software testing is to provide a systematic and structured approach to verify whether the software meets the specified requirements and functions correctly. Test cases serve as a set of instructions or scenarios that are designed to test different aspects of the software, including its functionality, performance, usability, and reliability. By executing test cases, software testers can identify defects, errors, or inconsistencies in the software and ensure that it performs as expected before it is released to the end-users. Test cases also help in documenting and communicating the testing process, enabling effective collaboration between testers, developers, and stakeholders.