The new versions of Word, Excel, PowerPoint, Outlook and OneNote provide the best of both worlds for Mac users—the familiar Office experience paired with the best of Mac.
Office for Mac is cloud-connected, so you can quickly get to the documents you’ve recently used on other devices and pick up where you left off. New, built-in document sharing tools make it easy to invite teammates to work on a document together. When sharing documents, you won’t have to worry about losing content or formatting, as Office for Mac offers unparalleled compatibility with Office on PCs, tablets, phones and online.
https://blogs.office.com/2015/07/09/office-2016-for-mac-is-here/