Microsoft will acquire enterprise social network provider Yammer for $1.2 billion in cash, confirming a weeks-long rumor that had clearly caught the attention of the Microsoft Dynamics ERP and CRM communities.

At last week's Decisions Spring 2012 conference, attendees treated the acquisition as a foregone conclusion, asking Dynamics product managers on each day for details on when and how an integrated solution would be brought to market.  Dynamics product managers had nothing to say last week on the topic.

(Ed.: All the sessions from Decisions are still available on demand)

Yammer will join the Microsoft Office Division, led by division President Kurt DelBene, and the team will continue to report to current CEO David Sacks.

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