Described herein are systems and methods that can support bridging VCNs in a manner which addresses customer needs with respect to access mechanisms, connectivity, regional availability, service complexity, and customer isolation/security. The system and methods that can support bridging VCNs as described herein have particular utility with respect to providing etcd-as-a-Service. In particular embodiments virtual network interface (VNIC) features are used to implement a bridge between a subnet of an etcd VCN and a subnet of a customer VCN in order to bridge the subnets.