What property determines the use of the session domain?

The property that determines the use of the session domain is tied to the concept of session scope within the Glide framework. Specifically, "glide.domain.session_scope" is critical for enabling session-aware domains. When this property is set, it allows the platform to utilize the session domain, which influences how data isolation and access control are managed for user sessions in multi-domain environments.

This facilitates the correct handling of user sessions in a way that respects the boundaries of different domains in an instance, ensuring that users only interact with the data that is relevant to their particular domain context. By leveraging session domains, organizations can enhance security and maintain data integrity across multiple divisions or business units within a single ServiceNow instance.

In contrast, the other options pertain to various domain functionality but do not specifically focus on the operationalization of session domains as effectively as the correct choice does. For example, "glide.sys_domain.activate_session_scope" may be about activating certain features, but it isn't directly about determining the session domain's use in sessions. Similarly, "glide.sys_domain.use_session_domain" and "glide.domain.enable_separation" deal with broader domain settings rather than the specific scope of sessions.