How can users share maps and apps in Portal for ArcGIS?

Users can share maps and applications in Portal for ArcGIS through various mechanisms that enhance collaboration and flexibility. One key method is by utilizing groups within the portal. Groups can be created for specific teams or projects, allowing all members to access shared content easily, which fosters collaboration. Additionally, user profiles play a significant role in content sharing, as users can set their own preferences for sharing their maps and apps with others, either within specific groups or across the organization.

Moreover, public access settings allow for broader distribution of maps and applications. When content is shared publicly, anyone can view it, which is useful for marketing or community engagement. This multi-faceted approach to sharing ensures that users can control who has access to their work while also providing options for wider dissemination when needed.

The other choices, while mentioning some aspects of sharing, do not encompass the full range of capabilities available in Portal for ArcGIS. The options that suggest limited means of sharing do not reflect the robust sharing features that are built into the platform.