Microsoft today announced that they are rolling out co-authoring in Sway. It allows users to create and edit Sways with other people. Simply share an edit link with anyone you’d like to work with. When your family, friends, classmates or colleagues click the link and log in, your Sway will show up on their “My Sways” page, too (with an icon indicating it’s a shared Sway to help you all stay organized). They can edit the Sway just as you can—and at the same exact time as well.
Microsoft is also adding the ability to copy a Sway. Now you can make a copy of your Sway to preserve that original so you don’t have to worry.
Read more about it here.