Microsoft announced the addition of Skype document chat to Office Online. It’s available when you collaborate with others in real-time in Word or PowerPoint.
To use it, click the Chat button. You can continue chats after leaving the document via Skype from your desktop computer or phone.
“The Office Online real-time co-authoring feature makes it easy for you to work together with others on a document from your browser,” the company
says. “Whether you are putting the final touches on a contract with your business partner or collaborating on an essay for a school project, Office Online lets you work seamlessly with others no matter where they are.”
This is rolling out over the coming weeks at office.com.