After federation, which security model does ArcGIS Server use?

After federation, ArcGIS Server operates under the ArcGIS Enterprise security model. Federation refers to the integration of ArcGIS Server into an ArcGIS Enterprise deployment, where the server is registered with the enterprise portal. This process allows for centralized access control and user management, leveraging the robust security features of ArcGIS Enterprise.

The ArcGIS Enterprise security model includes various authentication mechanisms, role-based access control, and the ability to manage users and their permissions through the portal. This integration enhances the security of services and data by ensuring that only authorized users have access and can perform actions based on their assigned roles.

Furthermore, while other security models and protocols, such as OAuth 2.0 or Basic Authentication, may be employed in various contexts (like when accessing ArcGIS Online or other external applications), they are not the primary security model utilized by ArcGIS Server after federation. Instead, ArcGIS Enterprise provides a comprehensive framework for security that is specifically designed to manage and secure GIS resources effectively within an enterprise environment.