What type of access do user profiles limit in Portal for ArcGIS?

User profiles in Portal for ArcGIS are primarily designed to control the type of access users have to content and resources within the portal. One key function of user profiles is their ability to limit public access to the content shared by users.

When a user publishes items in Portal for ArcGIS, they can specify the sharing settings that determine whether the item is accessible to everyone (public), or restricted to certain groups or individuals within the organization. By setting these types of access permissions, user profiles ensure that sensitive or proprietary information is not made available to the general public, thus protecting the organization's data and intellectual property.

Public access allows any user on the internet to view and access the content, which could potentially lead to security risks if sensitive content is shared inadvertently. Therefore, user profiles help enforce stricter sharing settings, ensuring that items are only shared with specific users or groups as necessary.

In contrast, other access types like admin access, group access, or all external access deal with more specific scenarios of user permissions and governance within the organizational context and don't directly correlate to the general public's ability to view content. Therefore, the focus on limiting public access effectively captures the primary function of user profiles in this scenario.