"The first 10 years of SharePoint's life were very clearly focused on documents. It was a document-centric system. That’s exactly what the industry wanted at the time," he said. "As we look towards the next 10 years of SharePoint, we want to maintain that document strength but we’re also going to increasingly become a people-centric system.”

Vendors like NewsGator have provided ESN capabilities to SharePoint for years, meeting the demand of customers who weren't satisfied with the native social collaboration features of the product.

"There have always been places where the partner ecosystem has been able to innovate faster than we have, so they produce solutions on top" of SharePoint, he said.

However, some like Forrester analyst Rob Koplowitz feel that Microsoft has been slow on the uptake.

"Microsoft has lagged behind vendors with more focused offerings. The decision to use SharePoint as a primary delivery device for enterprise social capabilities has advantages but speed to market is not one of them and enterprise social is a fast moving market," he said.