What primarily defines the responsibilities and limitations of users in a Liferay portal?

User roles and permissions are fundamental in defining the responsibilities and limitations of users within a Liferay portal. This system governs what actions users can perform and what resources they can access. By assigning specific roles to users, administrators control the level of authority each user has, whether they are allowed to create content, manage site configurations, or access sensitive information.

For example, a user assigned a "Content Editor" role may have permissions to edit and publish content but may not have access to administrative tools or settings. Conversely, an "Administrator" might have full access across the platform. This granularity in permissions ensures that users can only interact with the portal in ways that are relevant to their roles, maintaining security and functionality.

In contrast, user interface design focuses on how users interact with the portal visually and does not inherently control what they can or cannot do. User feedback mechanisms relate to how users can provide input on their experience, and while important for improvements, they do not dictate roles or permissions. User analytics tracking collects data on user behavior, which can inform decisions but does not directly influence user responsibilities. Thus, the definition of responsibilities and limitations is primarily rooted in the framework of user roles and permissions in Liferay.