The image shows an OCI region with an availability domain that contains two fault domains (1 and 2). A VCN spans the two fault domains, and contains two subnets (A and B).

A sensor on the internet connects to a load balancer in fault domain 1, subnet B, via an internet gateway. The connection continues to two internet-of-things (IoT) backends, one in each fault domain, and then on to Oracle Database in fault domain 1.