Apple Unveils iCloud

At today's Apple Worldwide Developers Conference, Steve Jobs gave up the details of the company's much-discussed cloud-based music service.

The new iCloud service replaces Apple's MobileMe document-sharing offering, which cost $99 a year. The new iCloud service is free and available now with an iOS 4.3 update, Jobs said. With iCloud, content such as music and documents is stored on large servers instead of on personal hard drives—and is accessible from anywhere through the Internet. Apple will provide 5 gigabytes of free storage for mail, documents and backup. The new iCloud service is Apple's seal of approval of what many experts believe is the next major iteration of the digital world.