by Mattia Epifani & Pasquale Stirparo
iCloud is a free cloud storage and cloud computing service designed by Apple to replace MobileMe. The service allows users to store data (music, pictures, videos, and applications) on remote servers and share them on devices with iOS 5 or later operating systems, on Apple computers running OS X Lion or later, or on a PC with Windows Vista or later. Similar to its predecessor, MobileMe, iCloud allows users to synchronize data between devices (e-mail, contacts, calendars, bookmarks, notes, reminders, iWork documents, and so on), or to make a backup of an iOS device (iPhone, iPad, or iPod touch) on remote servers rather than using iTunes and your local computer.
The iCloud service was announced on June 6, 2011 during the Apple Worldwide Developers Conference but became operational to the public from October 12, 2011.