One of the reasons we want to establish authentic audiences for students is so real people can view and interact with the projects students create. We want to take student work out of a pile of papers (or a hidden digital folder) and place it in the real world. Because when we establish authentic audiences for students, they can see the purpose for their work.
http://classtechtips.com/2016/11/27/4-ways-create-authentic-audience-students/