Security Rol and Users external

I wanted to know about the security of users and outsytems roles, and in the case of use users and external roles, what would be the security?

Hello Eric, 

Just to highlight, as Daniel pointed the documentation. 

Users can have roles assigned to them and you can use those roles to control authorizations in your application. 

If you are using an external authentication provider, you will have to map group/roles from the external provider to group/roles from OutSystems. 

There is also online training for External Authentication explaining some scenarios with exercises/exames (like using Okta). 

Hope this helps.