iCloud
Share files and folders in iCloud Drive on iCloud.com
You can share files and folders in iCloud Drive so other people can view and edit them.
On iPhone, you can view, organize, and delete shared files and folders on iCloud.com. See Add or remove shared files and folders in iCloud Drive on iCloud.com and Delete shared files or folders in iCloud Drive on iCloud.com.
If you want to share files and folders and manage sharing, you must go to iCloud.com on an iPad or a Mac or Windows computer.
You can also use the Files app on your iPhone to share files and folders. See Share files and folders in iCloud Drive in the iPhone User Guide.