Everything itunes in the cloud
Everything you need to know about setting up, backing up, restoring, and updating your iPhone, iPod touch, and iPad, and managing your iTunes apps, books, music, TV shows, movies, Match, and Photo Stream in the cloud
iCloud is Apple's online service designed to make managing your iPhone, iPod touch, iPad, and Apple TV, and your iTunes content easier and more automatic than ever. Like the name implies, iCloud is based in the "cloud", which is a trendy way of saying giant data centers filled with servers that you can access from your device over Wi-Fi or 3G/4G internet, wherever you are, whenever you want. It consists of several services that work with the apps on your iPhone, iPod touch, and iPad, and with iTunes and a handful of desktop apps on Mac and Windows. Most iCloud services are completely free, although additional storage and services are available for purchase.
Everything you need to know about re-downloading apps, games, iBooks, music, TV shows, and movies from the iTunes Store and iCloud
iTunes in the Cloud lets you access content you've bought from Apple's iTunes Store, App Store, and iBookstore, re-download it to your iPhone, iPod touch, and iPad, and to iTunes on your Mac or Windows PC, and stream your music, movies, and TV shows to your Apple TV.
Apple has just released a new iCloud-themed commercial aimed to show the advantages of their push and store network. The commercial begins with an iPhone user tapping "Use iCloud", then buying an album. Cut to an iPad where the music automagically downloads as well. Cut to a MacBook Air and the music is also downloading there.
