Microsoft Office didn't get a ton of stage time at Build this year, but the company announced a handful of improvements for both users and developers. Probably the most notable was the news that "add-ins" for Office (which work similar to browser extensions) would be coming to Office for Mac for the first time. It's a smart move to get those add-ins out to the Mac, because they're already available on Windows, the iPad and the online Office interface. Making them work with Office on the Mac goes helps unify the platform, something Microsoft has made a major focus in recent years.