The term users refers to those who have a WAYF login. To be able have a WAYF login you need to be a student or an employee on e.g. an educational institution which is connected to the WAYF identity federation.

See a list of the institutions connected to WAYF.

With your WAYF login you get access to any WAYF-connected web service with which your institution has an agreement.

See a list of the services connected to WAYF.