digraph G {
    node [ shape=box ]
    rankdir=LR;

    label="GeoIP\nThe CDN decides what to do based on the source IP\nAn inside CDN decision"

    clients1 [ label="Client set 1" ]
    clients1->edgenode1 [ label="Access content served by CDN" ]
    clients2 [ label="Client set 2" ]
    clients2->edgenode2 [ label="Access content served by CDN" ]
    clients3 [ label="Client set 3" ]
    clients3->edgenode3 [ label="Access content served by CDN" ]

    subgraph cluster_pop1 {
        label="Any Pop"
        edgenode1 [ label="Edge Node" ]
        rules1 [ label="Tenant/Domain specific rules" shape=oval ]
        edgenode1->rules1 [ label="Q: What to do with IP of client set 1?" ]
        rules1->edgenode1 [ label="A: (f.i.) Display \"Not available in this country\"" ]

        edgenode2 [ label="Edge Node" ]
        edgenode2->rules1 [ label="Q: What to do with IP of client set 2?" ]
        rules1->edgenode2 [ label="A: (f.i.) Display \"Server from a particular origin\"" ]

        edgenode3 [ label="Edge Node" ]
        edgenode3->rules1 [ label="Q: What to do with IP of client set 3?" ]
        rules1->edgenode3 [ label="A: (f.i.) Display \"Server content as usual\"" ]

    }

}