Domains are the domain names used by the
VCLGroup. There can be one or more domains assigned to a VCLGroup.
Important to note is that when a Shared/Cloud deployment is used, only one of the same domain can be used on the same agent.
Multiple VCLGroups can use the same domain as long as it is on different agents. Domains have no real effect when deploying a VCLGroup as a root deployment (see root deployment chapter).
In order for traffic routing to work, a VCLGroup is required to have at least one domain when using routers.