The final element covered here is Horizon. Horizon is the OpenStack dashboard. It is the single-pane-of glass view into OpenStack for the customer. It provides a web-based view of the various components that comprise OpenStack (Nova, Cinder, Neutron, and others). Horizon provides a user interface view of the cloud system as an alternative means over the API. Horizon is extensible so a third party can add their widgets or tools to the dashboard. A new billing component may be added and a Horizon dashboard element can then be instantiated for customers.  

Most IoTs that use cloud deployments will include some form of a dashboard with similar features.