iCloud

iCloud is Apple's personal cloud service, launched on October 12, 2011, designed to store and sync data across Apple devices, including Mail, Calendar, Photos, Notes, Contacts, and more. It offers 5 GB of free storage, with paid plans available up to 12 TB. iCloud is integrated into iOS, iPadOS, watchOS, tvOS, macOS, and visionOS, and is accessible via web interface and Windows PCs. As of 2018, iCloud had approximately 850 million users. Apple Inc., headquartered in Cupertino, California, is the company behind iCloud, and it remains the ultimate owner of the service.