If you keep your stuff in Dropbox, it’s easy to grab a link to a file or a folder. Then you can send that link to another person or store it in, say, your to-do list so you can quickly open it with a click. You can even grab the link inside the iOS Files app.
But if you use iCloud, this simple task is no longer simple. In typical Apple style, a clean UI comes at the expense of hiding almost everything behind multiple taps and cryptic pop-up boxes. But all is not lost. You can actually grab a link to any file stored in your iCloud Drive — and use it in any app you please.