box-logoDocument collaboration company Box.net announced new integration with Salesforce.com today, which will allow users to access Box’s shared documents directly from Salesforce’s customer relationship management (CRM) service.

This has been a big demand among Box customers, said chief executive Aaron Levie, many of whom are salespeople, and who previously had to jump back-and-forth between their Box and Salesforce accounts. It also reflects a broader strategy for his Palo Alto, Calif. company — Box already offers integration with online tools like Zoho, Google Docs, and Echosign, but the Salesforce partnership will be the first of hopefully many deals with business software makers targeting bigger, enterprise-sized companies.

These kinds of partnerships are “part of our DNA,” Levie said, and the system is designed so Box can add more integration without much difficulty.

“Independent integrations just get customized to the design and look and feel, using our same set of APIs and same framework ,” he said. “Partners can add Box to their environment very easily.”

You can see a demo of the Salesforce integration in the video below, but it works the way you’d expect, basically — when you’re using Salesforce to look up a potential customer, you can also see all the documents related to that account that you’ve stored in Box. Even cooler, you can access some of the other Box integrations from within Salesforce, such as signing a document using Echosign.

The Salesforce integration is included as part of Box’s enterprise accounts. As a promotional effort, Box is also offering unlimited storage to customers who join Box for the Salesforce integration.

Box has raised in $12.5 million from U.S. Venture Partners and Draper Fisher Jurvetson.