User experience and usability testing are closely related. First, let us give you a quick insight into what usability testing is. We can simply define it as the process used to test something by involving users in real-time. Usually, what happens is users would be requested to perform or indulge in certain activities of a product or service that is going through the final phase of development.
Someone closely related to the product development team – such as a quality analyst – would watch them while they perform the usability testing. All of them are expected to express their experiences, feelings – happiness, sadness, anxiety, annoyance, frustration – while using the product. They are closely watched to understand what affects them most.