Which of the following components plays a key role in managing user roles and permissions within an Esri Enterprise system?

The Portal Administrator plays a crucial role in managing user roles and permissions within an Esri Enterprise system. This individual is responsible for overseeing the configuration and management of the portal, which serves as the central access point for users and content. Through the Portal for ArcGIS, the Portal Administrator can define user roles, assign permissions, and manage groups, allowing for a customizable and secure environment tailored to the specific needs of the organization.

The Portal provides robust capabilities for user management, enabling administrators to control what users can access, what datasets they can interact with, and the privileges they have, such as viewing, editing, or sharing content. This level of control is essential for maintaining data security and ensuring that users only have access to the information necessary for their roles.

While other roles, such as a Database Administrator or ArcGIS Server Manager, are important in managing data and services within the broader Esri Enterprise environment, they do not directly manage the user roles and permissions within the portal itself. The Identity Store, while it is responsible for authenticating users, focuses more on verifying identities rather than handling permissions and roles, which is specifically within the domain of the Portal Administrator.