What is the primary focus of system testing?

The primary focus of system testing is on identifying defects in the whole test object, which typically includes the complete and integrated software application. This phase occurs after integration testing and is essential for validating the end-to-end functionality of the system, ensuring that it behaves as expected in a real-world environment.

System testing checks for both functional and non-functional aspects of the application, including performance, usability, security, and reliability across the integrated components and features. By testing the entire system, it helps to assure stakeholders that all parts work together correctly and that the overall requirements have been met. This comprehensive approach is crucial for uncovering issues that may not be evident when examining individual components or modules on their own.