Your Apple ID is the account you use for all Apple services. Use the latest version of macOS. Update to the latest version of macOS. Go to Apple menu.
For the best iCloud experience, make sure your device meets the minimum system requirements.
Update to the latest version of macOS. Choose Apple menu > About This Mac > Software Update. If you’re using macOS Mojave or earlier, choose Apple menu > App Store. See if there’s an update available.
Choose Apple menu > System Preferences, then click Apple ID. If you’re using macOS Mojave or earlier, click iCloud. Enter your Apple ID. When you sign in, iCloud is turned on automatically.
Choose Apple menu > System Preferences, then click Apple ID. If you’re using macOS Mojave or earlier, click iCloud. Choose the apps—like Notes, Photos, and iCloud Drive—that you want to use with iCloud.
Securely store your app’s data and documents in iCloud — and keep them up to date across macOS, iOS, watchOS, tvOS, and the web. With iCloud, your users can access the information they want, wherever they want it.
CloudKit keeps your app data connected and up to date. And CloudKit JS makes it easy to bring your app to the web, so your users always have access to their latest information.
Learn more about CloudKitWith the document provider extension, you can let your users open, edit, and save their documents on iCloud Drive.