Apple CEO Steve Jobs returned to the keynote stage on Monday to launch Apple's upcoming and anticipated iCloud service.

STEVE JOBS, CEO, APPLE:  "iCloud stores your content in the cloud and wirelessly pushes it to all your devices. So it automatically uploads it, stores it, and automatically pushes it to all your other devices. But also, it's completely integrated with your apps. And so everything happens automatically and there's nothing new to learn."

iCloud will  let users store documents, calendars, contacts, photos and music online and distribute them to other devices, including Macs, iPads, iPhones and Windows PCs.

STEVE JOBS, CEO, APPLE: "Keeping these devices in sync is driving us crazy. So we've got a great solution to this problem. And we think this solution is our next  big insight. We're going to demote the PC and the Mac to just be a device, just like iPhone and iPad or an iPod Touch. And we're going to move the digital hub, the center of your digital life, into the cloud. Because all these new devices have communications built into them, they can all talk to the cloud whenever they want."

The service will launch in the fall and be free. Users will have 5GB of online storage, and music, books, apps and photos won't count against that total.

Apple will introduce three new apps to work with iCloud for documents, photos and music. Perhaps the most anticipated is iTunes in the Cloud.

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It will let users share their songs bought through iTunes with as many as 10 devices. For $25 a year, an additional service will offer cloud access to songs ripped from CDs.

iCloud replaces MobileMe, which cost $99 per year. Jobs admitted MobileMe had been a disappointment.

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STEVE JOBS, CEO, APPLE: "You might ask, why should I believe them? They're the ones that brought me MobileMe! It wasn't our finest hour. Let me just say that. But we learned a lot."