Cloud file syncing and sharing service Box and customer relationship management software company Salesforce are teaming up again. They’re announcing new native integrations of Box inside Salesforce services, as well as a new Box software development kit (SDK) for Salesforce.

The companies have worked together since as far back as 2009, but only on the Box for Salesforce app on the Salesforce App Exchange. Now that’s changing.

“Instead of Box being an app on top of Salesforce, content from Box is put into the Salesforce experience in all sorts of native and contextual ways,” Box cofounder and chief executive Aaron Levie told VentureBeat in an interview.

Box will show up as a native option in Salesforce Lightning Sales Cloud, the Salesforce1 mobile app, and the Salesforce Chatter enterprise social network, among other places, in a Salesforce Files Connect for Box pilot starting in February 2016.

As for the SDK, it’s available now on GitHub, enabling non-technical people to embed Box technology into apps with the Salesforce App Cloud. For instance, an intranet application could get a Box widget for searching through and viewing files.

The deepened partnership benefits both parties.

For Salesforce, this is another way to give customers quick access to their data that typically sits in other clouds. In the past year and a half Salesforce has brought Dropbox for Business and OneDrive for Business closer.

For Box, usage could go up because the service will become easier to use in Salesforce. It’s becoming as native as a cloud file sharing tool can get in Salesforce. In the real world, this means salespeople could more frequently share Box files with colleagues and prospects.

Box, which went public last year, has also landed integrations recently with Microsoft Office Online and IBM. Box also now integrates with Chrome OS.

“Our goal is to remove friction and make this very efficient, collaborative selling process for our customers,” Levie said.

See the Box blog for more information on the SDK and the product integrations.