Imagine your team has spent weeks developing a new app. The design looks great, all the buttons work, and the developers are happy with the result. Then the first user gets their hands on it. They cannot figure out where to create an account, overlook an important feature, and eventually close the app.
The problem may not be the technical implementation. The app might simply not be as intuitive as you expected.
That is exactly why UX testing matters. It helps you identify problems in how people use your product before they turn into costly fixes or reasons for users to switch to a competitor.
The good news is that you do not need an expensive research agency or a specialised testing lab to get started. You need to know what you want to learn, find a few suitable participants, and observe how they interact with your product.