iCloud is a cloud storage service created by Apple Inc. The service allows its users to store data such as documents, photos, and music on remote servers for download to iOS, Macintosh or Windows devices. It doesn't use their mobile or PC storage. They can also share and send this stored data to other users, and can manage their Apple devices if lost or stolen remotely, meaning nothing gets lost. The service currently has over 782 million users. It lets users wirelessly back up their iOS devices directly to iCloud, instead of having to do it manually.