Who should use Yammer, and who shouldn’t? What sets Yammer apart is its ability to seamlessly integrate with the rest of your business operations in Office 365.

Microsoft has taken the first step in its integration roadmap for SharePoint and Yammer, allowing Office 365 customers to replace SharePoint Online's activity stream with Yammer's.

Before Microsoft bought Yammer for $1.2 billion in July, enterprises had been able to integrate SharePoint and Yammer to an extent using their respective APIs.

ABB has agreed to implement Microsoft 's Office 365 and its enterprise social network, Yammer, utilizing the cloud-based solutions across its international operations, Microsoft announced today.