What does the domain map illustrate, and what is found all the way on the left?

The domain map is used to visualize the relationship and hierarchy among different domains within a system. It illustrates how various domains are structured and interconnected. The element found all the way on the left side of the domain map typically represents the primary domain, which is foundational in setting the context for the rest of the domains displayed in the hierarchy.

The primary domain is essential as it serves as the main entry point and often contains core configuration data that affects the other subordinate domains. Therefore, understanding that the domain hierarchy starts with the primary domain on the left helps users navigate through the overall structure and comprehend how access and data flow might be managed within the system.

In this context, other choices focus on different aspects that do not accurately capture the specifics of what the domain map illustrates. For instance, “user roles” and “data access” are not the primary focus of a domain map when discussing its hierarchy or structure. The choice emphasizing the default domain does not align with the concept of the primary domain being the one present at the beginning of such a visualization. Thus, the answer correctly identifies both the purpose of the domain map and the element located on the left as the primary domain, a crucial aspect of understanding domain hierarchies.