RO Single Sign On Identity Provider
Instead of using an external party like Google or Facebook to handle your authentication you can use your Joomla site as an Identity Provider. Hook up any client, like any other Joomla site or another application that makes use of SAML to connect to your Joomla website.
RO Single Sign On Service Provider
Using RO Single Sign On you can use your Joomla website as a Service Provider by allowing your users to login with an external identity provider, for example ADFS within your network or Google/Facebook as outside providers.