On stage Tuesday at Microsoft's Worldwide Partner Conference, Facebook Chief Information Office Tim Campos announced that the social network chose to buy Microsoft Office 365 for its employees because "Microsoft got cool again.

"Campos elaborated that the "key aspects of our culture are things like 'be bold, move fast.'

That aspect of our culture is most important, and that's where Office 365 comes in.

"Microsoft Office 365 is the subscription-driven, cloud-focused version of Microsoft's famed productivity suite, which includes tools like Word, Excel, Outlook, and PowerPoint.

Its main competitor is the Google Apps suite.To that end, Campos says, Facebook's philosophy is to provide its employees with tools that help them work the way they want, on the devices they want.

Since Office 365 works on Macs, PCs, iPhones, and Android, it meets those needs soundly.Plus, Campos praised Office's ability to help Facebook's employees deal with the mounds of data that they generate both internally and externally, by way of artificial intelligence-driven tools like Microsoft Delve and Microsoft Exchange's Clutter feature for filtering unimportant messages.But most importantly of all, Campos says, is the speed and focus with which Microsoft keeps making Office 365 better, adding new and useful features, capabilities, and apps to the productivity suite on a rolling basis.

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