iCloud Drive stores your presentations, spreadsheets, PDFs, images, and other kinds of documents so you can access these documents from any of your devices set up with iCloud. It allows your apps to share documents so you can work on the same file across multiple apps and collaborate on them with others in real time.
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.
To access iCloud Drive, you must be signed in to iCloud with your Apple ID. iCloud Drive works with supported apps including Pages, Numbers, Keynote, GarageBand, and some developers other than Apple.