Microsoft is applying big data tools to help you understand patterns in your online network. Office Graph maps content and activity from Microsoft Office, including email, social conversations, and meetings, and documents in SharePoint and OneDrive.
Office Graph applies machine learning techniques to your data. It offers a query language as well as developer tools.
Office Graph is in preview mode now and subject to change. Watch for it and for related products from Microsoft and other vendors to tap into structured and unstructured data.