iCloud is Apple’s cloud storage and cloud computing service. It was launched in October 2011. Like other cloud based services iCloud let the users store music, movies, mails, messages and other kind of data including iOS application data on remote computer servers.
This data and information can then be downloaded on various iOS based devices running iOS 5 or later. It can also be used through Macs running OS X 10.7.2 “Lion” or later and through PCs running Microsoft Vista Service pack 2 or later. It allows the users to wirelessly backup their iOS devices to iCloud instead of manually doing so through iTunes. iCloud is built into every new iOS device and every new Mac.
iCloud comes with some cool features like :
photo streaming : When user clicks a snap from one iOS device it automatically appears on all the other devices including Mac or PC on which the user is signed in.
Documents, Apps, Entertainment in iCloud : User create documents on one device and iCloud make that available on all other iOS devices and help in keeping it up to date. Calendars, contacts, emails, bookmarks and reading lists can also be kept up to date on all the devices. iBooks purchased from the iBookstore, apps downloaded and music purchased from iTunes Store are also available to all the iOS devices instantly. User does not have to worry about syncing the devices with each other. iCloud does it well.
Backup : iCloud automatically takes backup of the IOS devices on a daily basis over Wi-fi when the device is connected to a power source.
Find my iPhone :With iOS 6, iCloud introduced a lost mode which immediately locks the device which the user thinks he has lost, with a four digit passcode.