What is the term for a configuration allowing two domains to see each other's data beyond the normal hierarchy?

The term for a configuration that allows two domains to see each other's data beyond the normal hierarchy is Cross-Domain Visibility. This concept refers to the capability of different domains, which may have their own separate data and management structures, to access and utilize each other's data effectively. This is particularly useful in scenarios where collaboration between different areas of an organization or between distinct organizations is needed, allowing for more streamlined communication and data sharing.

In contrast, the other terms provide different meanings. Dual Ownership typically pertains to scenarios in which two entities have shared responsibility or rights over an asset or data, but it does not imply visibility across domains. Circular Containership refers to a situation in data structures where entities are nested within one another in a circular manner, which is again unrelated to the visibility between distinct domains. Domain Sharing can suggest the sharing of resources or data within a single domain, which does not cover the broader context of cross-domain interactions. Therefore, Cross-Domain Visibility correctly captures the essence of the question regarding the interaction between separate domains.