iCloud Drive is a tool that helps you access all your documents on from your iPhone, iPad, iPod touch, Mac, and Windows PC. So, irrespective of the device you are using, you can always get back your document when you need it.

In this article, you will learn what you can do with icloud drive, what you need to have before you can use icloud drive, how to access files in iCloud Drive, the type of files you can store in icloud drive, learn how much storage you have and how to improve it and how to regain files that are been deleted.

What you can do with iCloud drive:

Keep files and folders up to date across all of your devices.
Create new files and folders from iCloud-enabled apps.
Work on the same file across multiple apps.
Access the files from your Mac Desktop and Documents folder everywhere that you use iCloud Drive.
Share files with anyone you like.

more on this link https://www.scitechinfo.com.ng/blog/2018/09/21/setup-icloud-drive/