icloud

  icloud stores your music, photos, apps, documents, calender and more. And pushes them to all your devices automatically. When you update your iPhone, iPad, or iPod touch to iOS 5, your favorite Apple apps become seamlessly integrated with iCloud. Just like that. So all your content and information is available and up to date, no matter which device you’re using.
  iCloud is so much more than a hard drive in the sky. It’s the effortless way to access just about everything on all your devices. iCloud stores your content so it’s always accessible from your iPad, iPhone, iPod touch, Mac, or PC.* It gives you instant access to your music, apps, latest photos, and more. And it keeps your email, contacts, and calendars up to date across all your devices. No syncing required. No management required. In fact, no anything required. iCloud does it all for you.
 
      When you sign up for iCloud, you automatically get 5GB of free storage. And that’s plenty of room, because of the way iCloud stores your content. Your purchased music, apps, and books, as well as your photo streams, don’t count against your free storage. That leaves your mail, documents, Camera Roll, account information, settings, and other app data. And since those things don’t use as much space, you’ll find that 5GB goes a long way.