An Azure networking service that is used to provision private networks and optionally to connect to on-premises datacenters.
Hi @Anonymous ,
just for clarification:
The two Resource Groups in the 2 different Azure regions might have the same name, but they are two different Azure resources/objects.
But beside that you are right: Both VMs in different regions in different vNets shouldn't be reachable without a peering of the vNets.
Do you have SiteToSide VPN Gateways implemented with both vNets? If so it might be the traffic is routed via this VPN gateway connections.
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Regards
Andreas Baumgarten