User Experience describes the emotions a person has when using a product or service online or using a device. UX design is the practice of using design to improve communication between a product and its user to enhance the user’s overall experience. The user experience forms part of the overall customer experience.

The User Interface includes all the parts of a website, app, computer, smartphone, etc. that the user can interact with. Display and touch screens, website menus, keyboards, cursors – these are all part of a user interface.