Microsoft Finally Rolls Out 'Delve,' One Of Its Most Important Products You've Never Heard Of

After years of work and months of teasers, Microsoft has released a tool called "Delve," which will do for Office 365 users what Cortana will do for Windows Phone users: manage their lives.

As of Monday, the company started rolling out the service to Office 365 business customers. Office 365 is the cloud version of Microsoft's uber popular Office apps.

There is no additional fee for Delve. It's included in Office 365 subscription plans, which range from $5/user/month to $22/user/month, a Microsoft spokesperson tells us.

Microsoft Delve, previously code-named "Oslo," 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.

Here's a view of what a Delve search page looks like.

Delve is built on top of a search-engine technology called Office Graph, which will eventually be used for all kinds of other tools, Microsoft says.

The downside to Delve is that it's pulling data mostly from Microsoft apps like OneDrive for Business (the cloud storage for Office 365 documents), SharePoint Online, and Yammer.

Delve will eventually include other Microsoft products like note-taking app OneNote and enterprise chat tool Lync, plus "other content sources, such as email attachments," says Microsoft general manager Julia White in a blog post.

Still, in order to be really useful, Microsoft will have to eventually link Delve to non-Microsoft apps, too, like Box, Dropbox, Salesforce.com and chat rooms like Slack.

That said, this is a big step in Microsoft's promised new direction.

CEO Satya Nadella is pushing Microsoft to become a "productivity and platform company." His vision is that your phone/tablet/PC/TV and business apps know you and cater to your needs before you issue a command.

Delve, along with Windows Phone's competitor to Siri, Cortana, are two main tools that he recently names as examples of this new vision.