"Facebook Inc. has signed a deal to use Microsoft Corp.’s online email and other software, even as it develops its own workplace communication and collaboration service.Facebook Taps Office 365 While Developing Own Workplace Service - WSJ
On Tuesday, Facebook will announce plans to use Microsoft’s Office 365, the web-based version of the software giant’s suite of workplace productivity programs. Facebook previously used the on-premises versions.
The social network’s 13,000 employees will tap some portions of Office 365, including its email and calendar. But they won’t have access to Yammer, Microsoft’s workplace social network, or Skype for Business, for messaging and videoconferencing, which directly compete with Facebook’s own services."
Tuesday, July 12, 2016
Facebook Taps Office 365 While Developing Own Workplace Service - WSJ
I think it's safe to assume 1) Facebook finds Office more productive than Google Apps, 2) there will be useful integration between Office apps and Facebook at Work, and 3) Facebook didn't pay full SRP for its Office 365 subscription...