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User Acceptance Testing (UAT) is the final phase of testing performed by end-users to verify that the software meets their requirements and expectations. It focuses on validating whether the system performs as intended in real-world scenarios, ensuring that the delivered product is ready for deployment. UAT often involves executing pre-defined test cases, such as functional workflows and edge cases, based on user stories or requirements. The primary goal of UAT is to confirm that all features and functionalities are working correctly and to identify any gaps or deviations from the specified requirements. UAT provides a critical layer of assurance because it reflects how actual users will interact with the system. Any issues identified during UAT can be addressed before the system goes live, reducing the risk of failure in production. Involving end-users in this process fosters trust and confidence in the delivered product. It ensures that the software aligns with business goals and minimizes the risk of post-deployment rework, which can be costly and time-consuming. Explanation of Incorrect Options: A) Unit Testing : Unit testing focuses on verifying individual components or modules of the software in isolation. It is conducted by developers and does not involve end-users. Its goal is to ensure that each unit of the code functions as intended, making it unsuitable for validating user requirements. B) Integration Testing : Integration testing checks how different modules or components work together. While it ensures seamless integration, it does not involve user interaction or validation of requirements from the end-user perspective. C) Regression Testing : Regression testing is conducted to verify that changes or updates to the software have not introduced new bugs or negatively impacted existing functionalities. It is technical in nature and does not involve validating user requirements. E) System Testing : System testing evaluates the complete and integrated software to ensure it meets the specified requirements. While comprehensive, it is typically performed by testers rather than end-users, making it distinct from UAT.
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