In ServiceNow, domain visibility determines whether users from one domain can access records from another domain. To grant domain visibility to a user, you can:

AAssociate a visibility domain to one of the user’s roles: This allows any user with that role to see records in the associated visibility domain1.

EAssociate a visibility domain to one of the user’s groups: Groups grant their members the visibility domains of the group, which means when a user is part of a group, they inherit the visibility domains associated with that group1.

It’s important to note that when a user leaves a group, they lose the group’s visibility domains, and the use of visibility domains should be done thoughtfully as excessive use can slow performance2. Moreover, the domain hierarchy should be optimal to prevent performance issues2.

The options B, C, and D are not standard practices for granting domain visibility according to the ServiceNow documentation and best practices. Specifically, associating a visibility domain directly to a user record or setting the visibility domain’s parent to the user’s domain are not mentioned as recommended methods3421.