The image shows internet users using DNS to access a primary data center and a standby data center. Both data centers are mirrored.

The data centers contain a JSON workload network with three subnets: application tier, database tier (client subnet), and database tier (administration subnet).

The application tier contains a load balancer, and application servers with Oracle REST Data Services installed in each server.

Oracle Exadata Database Machine is deployed within the JSON workload network, which contains storage servers, and database servers. A virtual machine cluster is contained within the database servers, where Oracle Database is deployed.

Both Oracle Databases in the primary and standby data centers use a Data Guard association for disaster recovery.