Microsoft mum on Office suite for Apple iPad

Talk has circulated for more than a year that Microsoft wants to bring native versions of its most profitable product to the hot-selling iPad, which one analyst estimates could generate $2.5 billion in extra revenue for Microsoft per year, but would remove an incentive to buying Windows-based tablets.

"We don't take it from the point of view, 'Do we need to have the PC software that's running on every single device?', we look very much at 'What is the experience that we are looking to have on those devices'," said Kurt DelBene, head of Microsoft's Office unit, asked about Office on the iPad at the Morgan Stanley technology investor conference in San Francisco, which was Webcast.

DelBene, who took over leadership of Office from Stephen Elop who left to lead phone maker Nokia in 2010, did not directly address putting native versions of Office applications on the iPad, a subject Microsoft has steered clear of in public.

Asked specifically about the availability of Office on Apple's iOS mobile system - which powers iPads and iPhones - DelBene instead stressed online versions of Office apps, which can be accessed via a browser but do not offer the full richness of installed software or an app.

"We've actually done a lot of work on iOS devices this time around," said DelBene. "We have enhanced the web applications pretty substantially,

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