User experience (abbreviated as UX) is how people feel when interfacing with a system. The system could be a website, a web application or desktop software and, in modern contexts, is generally denoted by some form of human-computer interaction (HCI).
UX Design helps UX designers focus on creating smooth and easy interfaces for users to have an engaging and simplified experience with a particular digital product or service. Any good User Interface Design (UI) company, UX design consultancy, UX design studio or User Experience UX agencies provide UI and UX design services for mobile app development, websites etc. to enhance the overall experience a user has with a product or service.