Generally your service will be available for more then one organisation. So, when a user logs in, the first thing to do is to determine his Identity Provider. This process is called IP Discovery and is done by a Where-Are-You-From (WAYF) selection page. This page can be provided by SURFconext (default) or by the Service Provider.
The WAYF selection page shows all Identity Providers that have allowed access to your service. Examples of this page are shown below, both for desktop/laptop and for mobile format. The name of the service is shown in top (in the examples below'SURFconext Teams | SURFnet'). For a live example go to SURFconext Teams and click on [Log in].