Usability testing is a method of evaluating a product or service by testing it with a representative sample of users. The goal of usability testing is to identify any issues or obstacles that users may encounter when using the product or service, and to make improvements based on the feedback and data collected during the testing process. Usability testing typically involves recruiting a group of users to test the product or service, and observing them as they use it. The users may be asked to perform a series of tasks or actions, and their behavior and interactions with the product or service will be recorded and analyzed. This data can then be used to identify any usability problems or challenges, and to make improvements to the product or service. Usability testing is an important part of the UX design process, as it provides valuable insights into the user experience and can help to identify and fix any issues that may affect the usability of a product or service.