What type of testing focuses on evaluating the software in a controlled environment to uncover defects?

System Testing is the type of testing that focuses on evaluating the software in a controlled environment to uncover defects. This testing occurs after the individual components have been integrated, allowing testers to assess the complete system's behavior. The goal is to ensure that the entire software product works as intended when all components are put together and functions properly within various scenarios.

During System Testing, various components are tested together, and multiple types of tests, such as functional testing, performance testing, and security testing, can be conducted to validate different aspects of the system. This comprehensive evaluation helps identify any defects that may not have been detectable in earlier testing stages, such as unit or integration testing, where the focus is narrower. System Testing ensures that the software meets specified requirements and is ready for deployment.