For $1.2B, Microsoft adds social to Office with Yammer

David Sacks Yammer CEO Microsoft Office

David Sacks, CEO, Yammer

Microsoft announced Monday that the company has officially acquired social software startup Yammer for $ 1.2 billion in cash. The purchase was widely reported more than a week ago, but Microsoft confirmed the deal Monday in a press release.

As we noted earlier this month, the purchase could give Microsoft a social dimension to its popular corporate software products. Yammer creates a Facebook-like experience for business clients.

Yammer will join the Microsoft Office division after the acquisition, but CEO David Sacks will continue to lead the group, Microsoft said in the release. Kurt DelBene, president of the Microsoft Office group, offered some thoughts on how Yammer might fit into the Microsoft world in a blog post that accompanied the formal press release:

The combination of Yammer, SharePoint and Office 365 will provide the most comprehensive and flexible solutions for enterprise social networking. Over time, I see opportunity for exciting new scenarios by adding Yammer’s stand-alone service alongside and integrated into our collaboration offerings with SharePoint, Office 365, Dynamics and Skype. I picture people being able to use Yammer to manage and expand their professional relationships, share and collaborate on Office documents, stay informed about content updates, and to seamlessly move from status updates and feeds into voice and video conversations.

Yammer most recently raised $ 85 million in a February funding round, which brought it to $ 142 million in total funding. The company currently has more than 5 million corporate users, including customers at 85 percent of Fortune 500 companies, Microsoft and Yammer announced along with the acquisition today.

“When most people thought social networking was for kids, we had a vision for how it could change the way we work,” Sacks wrote in a blog post Monday. “Four years ago, we started paddling out to catch the wave that we’re riding today.”

The companies have scheduled a conference call with Microsoft CEO Steve Ballmer, Sacks, and DelBene. We’ll update this story following that call.

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