Ankur Thakur, iDownloadBlog:

In this tutorial, we will go over how to clear up iCloud storage, and we will see what happens when iCloud is full.

Down below the “how to manage iCloud storage” walkthrough are sections telling you what will happen as your iCloud storage starts to fill up and, after that, a list of what will continue to work normally even after iCloud storage is full.

Good to know.