This image shows an Oracle Cloud Infrastructure (OCI) region with Monitoring, Backup, Event, and Alert enabled.

The region has three virtual cloud networks (VCNs), each with subnets that use security lists.

The first VCN has the following subnets:

• Load balancer (LB) subnet: Contains a load balancer and an internet gateway, which connects to Marketplace, OEMs ERP/CRM, and customers.
• Frontend subnet: Contains an API Gateway, Frontend Portal, a virtual machine running Frontend Software, and Elastic Performance. The Frontend subnet connects to the Service Bureau, Production Site, and Vistory Bitbucket located outside of the region.
• Backend subnet: Contains API Service, a virtual machine running Backend Software, and Elastic Performance.
• Database subnet: Contains a database cluster and Elastic Performance.

The second VCN has the following subnets:

• OKE Subnet-1 contains a virtual machine with a Kubernetes Cluster.
• OKE Subnet-2 contains a virtual machine with Jenkins.

The third VCN has a single Blockchain subnet that contains virtual machines with Blockchain Primary Node, Blockchain Node 1, Blockchain Node 2, and Blockchain Node 3.

The LB subnet is connected to the Frontend subnet and the second VCN, which contains the OKE subnets.

The Frontend subnet is connected to the backend subnet and to the second VCN with CI/CD.

The Backend subnet is connected to the DB subnet, to the second VCN with CI/CD, and to the third (Blockchain) VCN.