You need a Identity Provider Server (IdP) to manage the users and also the Service Provider Server(SP).
Of course you need to create the IdP. There are many system options.
On the other hand you need to configure you SP. If you are planning to use Moodle as SP you can use https://moodle.org/plugins/auth_saml2
Of course you need to create the IdP. There are many system options.
On the other hand you need to configure you SP. If you are planning to use Moodle as SP you can use https://moodle.org/plugins/auth_saml2