Microsoft officials today described how upcoming Windows Phone 7 smartphones will perform within a network of Windows 7 PCs and Xbox gaming consoles through a new Windows Live cloud platform to make the mobile experience easier and more powerful for workers and consumers.

"We're back, and we're back with something very different and very innovative," with Windows Phone 7 and Windows Live, said Andy Lees, senior vice president of mobile communications at Microsoft. He spoke at the software maker's Worldwide Partner Conference in Washington, which was also broadcast live over the Web.

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