Yammer, the corporate social networking and content collaboration company that Microsoft acquired for $1.2 billion last summer, has seen “tremendous” momentum, according to Microsoft.
Microsoft said in an official blog post today that Yammer sales grew 259 percent year-over-year in Microsoft’s third quarter, which ended last month, and that Yammer gained 312 new corporations as customers.
Microsoft did not disclose the actual revenue dollar amount. With the 312 new customers, Yammer now counts more than 200,000 corporations as customers.
Overall, Yammer has 7 million individual registered users, up from 5 million at the time of its acquisition.
In February, Microsoft had said that Yammer’s 2012 sales had tripled year-over-year.
Microsoft is working on integrating a number of its products and services with Yammer. It’s expected that by this summer, Yammer will use SkyDrive Pro for file storage, and Office Web Apps to preview and edit files directly within Yammer feeds. Integration of Yammer and SharePoint, Microsoft’s collaboration software, will likely take two years to complete, according to CITEworld.