This image shows a multicloud solution that features applications and data storage on Amazon Web Services (AWS) and data processing and customer access on Oracle Cloud Infrastructure (OCI).

The AWS cloud includes an application running an EC2 compute instance that has data pipelines into an instance of Relational Data Services (RDS) for MySQL. An application running on another EC2 compute instance accesses the data and has data pipelines to a MongoDB Atlas instance.

Equinix Exchange Fabric handles communication between the AWS cloud and OCI with AWS Direct Connect communicating with the databases in the AWS cloud and Oracle Cloud Infrastructure FastConnect communicating with OCI by using a dynamic routing gateway (DRG).

OCI includes 1 region with 1 availability domain. The region provides the following services:

Oracle Cloud Guard
Oracle Cloud Infrastructure Identity and Access Management
Oracle Cloud Infrastructure Logging
Oracle Cloud Infrastructure Monitoring
Oracle Cloud Infrastructure Object Storage

The architecture includes the following VCNs and subnets. Each subnet provides its own security list and route table:

VCN-0 (Hub): Provides 1 public subnet (10.0.0.1/28) with Oracle Cloud Infrastructure Bastion in availability domain 1 to handle incoming user traffic. The VCN provides an internet gateway for communications between public subnets and internet hosts and a service gateway to access regional services such as object storage over the Oracle network fabric without traversing the internet.
VCN1: Provides a service gateway and a DRG for private connectivity between on-premises networks and VCNs by using FastConnect and, in this case, Equinix Exchange fabric. The VCN provides three subnets:
- 10.0.1.1/24 private subnet: Provides and instance of Oracle Cloud Infrastructure GoldenGate in availability domain 1.
- 10.0.2.1/24 private subnet: Provides and instance of Oracle Autonomous Transaction Processing in availability domain 1.
- 10.0.3.1/24 private subnet: Provides a virtual machine (VM) running applications outside of the availability domain. The VM connects to Oracle Autonomous Transaction Processing.