Discovery Service Configuration
The eduTEAMS Discovery Service URL serves to discovery requests of the SPs.
The protocol is described in Identity Provider Discovery Service Protocol and Profile.
Discovery Service configuration is part of session initiator configuration. Shibboleth SP documentation on the subject is what you should rely on for more thorough information.
Set discovery to login handler
This example instructs Shibboleth SP login handler to use eduTEAMS discovery as discovery service.