What type of testing is focused on determining how easy the software product is to understand and use for the user?

The type of testing that focuses on determining how easy the software product is to understand and use for the user is usability testing. This form of testing involves evaluating a product by testing it with real users and observing how they interact with it. The objective is to identify any usability problems, gather qualitative and quantitative data, and determine the overall satisfaction level of users when they complete tasks.

Usability testing examines aspects such as the intuitiveness of the interface, the efficiency of task completion, and the overall user experience. It provides valuable insights into how well the software meets user needs and expectations, which is crucial for creating a product that is not only functional but also user-friendly.

Other types of testing, such as functional testing, regression testing, and integration testing, focus on different criteria, such as verifying that the software works as intended, checking for new bugs after changes, and ensuring that different components of a system function correctly together, respectively. These do not specifically target the user's ease of understanding and use, which is the primary concern of usability testing.