User experience design is when someone designs something so that it's easy for people to use. It’s kind of like when people design things like websites and apps, but with user experience design, the designer makes sure that using the website or app is simple and enjoyable for the person who’s using it. User experience designers want to make sure that people can figure out how to use something without having to spend a lot of time trying to figure it out. Basically, they want to make sure that whatever they’re designing is easy to understand and use.