A regular short link sends visitors to one destination. A Link-in-Bio page is a full mini-website, a single link that opens a page with multiple buttons, images, videos, social icons, contact forms, and more.
It's the link you put in your Instagram, TikTok, or Twitter bio when you want to share several things at once (your shop, your latest video, your contact info) instead of just one URL. You can fully customize its design and theme, and it comes with its own analytics.