EFSS is about file sync and share. Sync is about move files from point to point so it can be shared later. File sharing is about collaboration. OpenStack Swift can be the backend storage service where the files stay. The Gladinet Cloud Enterprise is the user-facing front end providing the sync and share capability.
In sharing and collaboration, one of the most required feature is permission control, meaning who can access what files and folders. This video demonstrates OpenStack EFSS solution with file permission control.
Team folder is like network share, in that you can assign read/write permission to different people.
Folder permission is like ACL (Access Control List), that you can assign list/read/write/delete permission to individual folders.
For more details, visit http://www.gladinet.com and follow the Enterprise or Service Provider links.