What does non-functional system testing include?

Non-functional system testing focuses on evaluating the quality attributes of a system rather than just its functional capabilities. This includes aspects such as performance, usability, reliability, security, and scalability. By examining these attributes, testers assess how well the system meets various quality standards and how it behaves under different conditions, which is essential for delivering a robust and user-friendly product.

For example, testing performance would involve confirming that the system can handle a certain number of transactions without a slowdown, while usability testing might include evaluating how intuitive and accessible the user interface is for end-users. Thus, including these aspects in testing ensures that the software not only works as intended but also provides a satisfactory experience for users.