Common language information services (CLIS) is like a special helper that helps different devices and machines understand each other. So imagine you and your friend both have toys that can talk but they speak different languages. Your toy can only understand English and your friend's toy can only understand Spanish. That's where CLIS comes in. It helps your toy and your friend's toy talk to each other by converting what they're saying into a language they can both understand, just like a translator. This is important because it allows different devices to work together and share information even if they don't speak the same language. It's kind of like a superpower for technology that helps everything work together smoothly.