iCloud Drive stores your presentations, spreadsheets, PDFs, images and other kinds of document so you can work on the same file across multiple apps and collaborate on them with others in real time. iCloud Drive works with supported apps including Pages, Keynote, Numbers and GarageBand, and some apps from developers other than Apple.
You can access iCloud Drive from the Files app on iOS and iPadOS, the Finder on your Mac, File Explorer for Windows PCs, or iCloud.com
iCloud Drive works with devices using iOS 8 or later or iPadOS, Mac computers using OS X 10.10 or later, and PCs with iCloud for Windows. You can also access iCloud Drive through iCloud.com.