Optimization Server web-console is a client that interacts with the Master API via a web interface.
The main features of the web-console are :
As a general remark: if the master is not reachable by the web console, a red banner is displayed, like in the screenshot below. If it happens, check the deployment configuration.
Let us note that the web console is not compatible (yet) with a deployment in High Availability (HA) mode (with redundant masters). Indeed, in HA mode, the web console(s) would have to be manually refreshed (by reloading the web page) to be up to date.