What does the Access Viewer in Sitecore allow you to do?

The Access Viewer in Sitecore specifically allows users to check user and role permissions. This tool is crucial for managing security within the Sitecore environment, as it provides a way to see which users and roles have access to specific content items and what type of permissions they possess. Being able to visualize access rights helps administrators to troubleshoot and ensure that the security model is aligned with organizational policies and user needs.

In the context of the other options: while viewing items in the content tree, monitoring site performance, and managing site content are significant functionalities within Sitecore, they are not the primary focus of the Access Viewer. The Access Viewer is more specialized and targeted toward understanding and managing the permissions aspect of user roles, which is essential for maintaining a secure content management environment.