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8220;We are rallying behind a single strategy as one company 8212; not a collection of divisional strategies,8221; chief executive Steve Ballmer said in a memo to employees.

8220;Although we will deliver multiple devices and services to execute and monetise the strategy,the single core strategy will drive us to set shared goals for everything we do. We will see our product line holistically,not as a set of islands.8221;

Ballmer said the 8220;One Microsoft8221; strategy would seek to bring together diverse segments such as Windows,Windows Phone,Xbox,Surface,Office 365 and others.

8220;Today8217;s announcement will enable us to execute even better on our strategy to deliver a family of devices and services that best empower people for the activities they value most and the enterprise extensions and services that are most valuable to business,8221; he said.

Microsoft remains the dominant PC software firm with its Windows operating system but its activities have broadened with the Xbox gaming console,the Windows Phone operating system and the Surface tablet. The company also offers cloud and business services.

In the mobile space,Microsoft is far behind players such as Apple and Google,which sell devices and make the operating systems for tablets and smartphones.

8220;Building upon Windows,Xbox and our growing suite of consumer and enterprise services,we will design,create and deliver through us and through third parties a complete family of Windows-powered devices 8212; devices that can help people just as much in their work life as they do after hours,8221; Ballmer said.

8220;We will strive for a single experience for everything in a person8217;s life that matters. One experience,one company,one set of learnings,one set of apps,and one personal library of entertainment,photos and information everywhere. One store for everything.8221;

Microsoft shares rose 1.3 per cent to USD 35.15 in early trade in New York.

A research note from Citi analysts earlier today said investors 8220;have significantly underestimated the company8217;s ability to maintain/grow its revenue in core franchises of Windows,Server and Tools and Business Division.8221;