The image shows a multicloud use case for application and database split-stack architecture.

OCI Region 1 - Production environment hosts too VCNs: VCN-0 (Hub) and VCN-1 (DB). OCI Region 1 uses FastConnect to connect to AWS Cloud and Google Cloud.

• VCN-0 (Hub): Hosts a Public Subnet 10.0.0.1/28 with a Service Gateway (SG-0), which hosts OCI Bastion Service.
• VCN-1 (DB): Hosts a Private Subnet 10.0.2.1/24 with a Service Gateway (SG-0), which hosts ATP DB. The ATP DB uses the DRG to connect to the internet and other cloud service providers using FastConnect.

The AWS Cloud region hosts apps on EC2. The Google Cloud region hosts apps on Google Cloud Compute.

The FastConnect connect using Equinix Exchange Fabric. Equinix Exchange Fabric connects to the AWS Cloud regions using AWS Direct Connect and to the Google Cloud region using Google Interconnect.