This is a simple deployment diagram that sketches how the library system works. It begins with logging in to the system. The system contains a panel for existing and new users as well as the admin. Both log in to their accounts. While the users are only allowed to check out and search for books, the admin can assign fees, add and manage the library books, add or remove a genre, view and remove users. They both then end at a common point and can log out of the system.