Apple's free iCloud will automatically sync data from Macs, PCs, iOS devices

By AppleInsider Staff

Apple finally showed off its long-awaited iCloud service on Monday, portraying it as a service that stores content, wirelessly pushes it to devices, and integrates with applications -- all at no cost to users.

iCloud was demonstrated by Apple Chief Executive Steve Jobs, who even admitted that the previous MobileMe service was not Apple's "finest hour." But he also said that despite the company's previous mistakes, iCloud is a new product.

"Today it is a real hassle and very frustrating to keep all your information and content up-to-date across all your devices," Jobs said. "iCloud keeps your important information and content up to date across all your devices. All of this happens automatically and wirelessly, and because it’s integrated into our apps you don’t even need to think about it—it all just works."

Apple is ready to ramp iCloud in its three data centers, including the third recently completed in Maiden, NC. Apple has invested over $500 million in its Maiden data center to support the expected customer demand for the free iCloud services.

The free iCloud services include:

Features of iCloud were also demonstrated Monday at Apple's Worldwide Developers Conference keynote. Details from those live demos and presentations are included below:

Contact, Calendar and Mail Sync

Like MobileMe, iCloud will offer syncing of contacts, calendars and mail. It will also be an ad-free service, and will ship with all iOS 5 devices this fall.

iCloud will come set up by default on new iOS 5 devices. Users will also be given 5GB of storage for mail, all free through the new service.

iCloud will be integrated in the App Store on iOS devices, allowing users to see all of the applications they own, even if they are not installed on the current device.

Backup to the Cloud

Devices can also be backed up to the cloud, for users who want to become truly PC-free. Content will be backed up to the cloud every day, and users will identify their account with a username and password login on any device.

Backups will occur over Wi-Fi only, and will apply to a number of applications on iOS devices, including purchased music, books and applications; photos and video stored in the camera roll; device settings; and app data.

Documents in the Cloud

A new feature called Documents in the Cloud automatically backs up documents created in Pages, Numbers or Keynote in the iCloud service. The newly released versions of the iWork suite for iOS already have this feature built in.

Developers will also have access to iCloud application programming interfaces for their software. Applications will be allowed to store full documents, and they will be pushed to a user's device automatically. It will work across all iOS devices, as well as Macs and PCs.

Photo Stream

Photo Stream will also bring the cloud to photos, allowing users to back up and sync pictures automatically. With the new service, photos will be available to access on any device. On iOS, this will be accomplished right within the Photos application.

To save memory, the last 1,000 photos will be stored on iOS devices, while in the cloud, photos will be saved for 30 days. Users can choose to keep a photo permanently by moving it into an album.

iTunes in the Cloud

With iTunes in the cloud, users will also be able to redownload songs to any device at no additional cost. Just as with applications on the App Store, content that is already owned will be represented with an iCloud icon.

A new setting in iOS will also allow automatic downloads of content on other devices. A new tab for purchased items will reside in the iTunes application. Songs are AAC files at 256Kbps and can be pushed to up to 10 devices.