In Revit Architecture 2015, BIM 360 has been introduced as an add-in. BIM 360 is a cloud based BIM management and collaboration solution.
BIM 360 is purposely used for publishing models on the BIM 360 cloud and for sharing latest project information within a team. This add-in allows you to perform several functions such as opening model from BIM 360 Glue to Architecture, appending models from BIM 360 Glue to the current model in Architecture, and sharing models with BIM 360 Glue.