System testing is a crucial phase in the software development process where the complete and integrated software system is evaluated. The primary goal is to ensure that the system meets specified requirements and functions correctly in various scenarios. This testing phase typically involves checking the software's performance, security, and usability to identify any defects before it is released to users. During system testing, different types of tests are conducted, including functional testing, performance testing, and security testing. Testers simulate real-world usage to verify that the system behaves as expected under various conditions. Successful system testing helps ensure a reliable and high-quality product for end-users.