This image shows an Oracle Cloud Infrastructure region containing three availability domains (AD), with a virtual cloud network (VCN) spanning those domains. AD 1 and AD 2 contain three private subnets and a Bastion VM. AD 3 is empty in this diagram. In addition to the private subnets, AD 1 also contains a load balancer, as described in the surrounding text under item 2.

The first private subnet in both AD 1 and AD 2 contains a Siebel AI server, as described in the surrounding text under item 3. The load balancer in AD 1 distributes traffic to both Siebel AI servers, as necessary.

The second private subnet in both AD 1 and AD 2 contains two Siebel app server instances, a three-node cluster of a Siebel Cloud Gateway (described in the surrounding text under item 4), and a Siebel filesystem. The Siebel Cloud Gateway cluster in AD 2 is depicted as inactive in this diagram.

The third private subnets in both AD 1 and AD 2 contains the primary databases. Traffic between them is protected by a Dataguard sync operation, as is described in the surrounding text under item 5.

External web clients access the region via an Internet Gateway while internal web clients must go through a VPN, then a dynamic routing gateway to the Siebel AI server in the AD 1 private subnet. Object storage is independent of any AD but within the VCN.