Is UX design front end or back end?

The field of user experience (UX) design is a multi-disciplinary one that covers a wide range of skills and knowledge. Because of this, it can be difficult to say definitively whether UX design is a front-end or back-end discipline. However, most UX designers tend to focus on the front-end aspects of design, such as creating user interfaces and conducting user research. This is because these activities are generally more visible to users and have a direct impact on their experience of using a product or service.