UI / UX Designing : User interface / User experience : These are two different disciplines, since they do not have the same object of study.
UX Design refers to the analysis of user feelings when they use a web interface, a mobile application or interactive software. Deepen this point with the definition of UX by the agency UX Usabilis. The expert in charge of this study is called UX Designer. Its task is therefore to optimize and improve the user experience (UX) based on tests carried out on the various possible user paths. The results obtained allow it to design a user experience that is as pleasant as possible and with a view to facilitating users in their search for information.
With the UI, the user interface, we enter the register of information technology and more specifically in the design of human-machine interface (HMI). Its purpose is to improve the interaction of a user with the interface. The UI designer is therefore the person responsible for creating a pleasant and useful interface for users. According to the rules and methods dedicated to the ergonomics of interfaces, he designs and positions the various graphic and textual elements of a web interface for example. Its objectives are to facilitate the navigation of Internet users by offering them intuitive, useful and practical ergonomic elements.