Okay, so you know how when you want to go to a website, you type in a web address in the browser? Well, sometimes people want to give you a shortcut way of getting to their website, and that's where XRI comes in.
XRI is kind of like a nickname for a website. It's a short name that stands for the long web address of the website. So instead of typing in a long web address, you can just type in the XRI and you'll get to the website.
Think of it like this: imagine your friend has a really long name, like "Supercalifragilisticexpialidocious." That's a lot of letters to remember when you want to call your friend! So your friend gives you a nickname, like "Super." Now whenever you want to call your friend, you can just use the nickname and it's easier to remember.
XRI works the same way. It's a shorter, easier-to-remember name for a website, and it helps you get to the website faster.