Delve

Delve searches your emails, meetings, contacts, social networks, and corporate documents stored in Office 365, then uses “machine learning” artificial intelligence to show you the stuff you need to see. Office Graph, the engine behind Delve, searches through most Office 365 content; in the future, Lync and email attachments will also be indexed. Only content you already have access to is presented for viewing; no security permissions change.

And, Delve is available with Google and iPhone-specific apps for improved mobile connectivity.