The image shows on-premises resources, OCI region 1, and OCI region 2.

The on-premises resources include a user, databases, applications, and customer-premises equipment.

OCI region 1 contains a virtual cloud network (VCN) 1 with a private subnet A and a public subnet A.

Private subnet A contains a data integration compartment with an OCI virtual machine and OCI Data Integration. Public subnet A contains an OCI Bastion instance.

OCI region 2 contains VCN 2 with a private subnet B and Oracle Services Network (OSN).

Private subnet B contains Oracle Autonomous Data Warehouse; and OSN contains Oracle Integration and Oracle Analytics Cloud.

The customer-premises equipment has a bi-directional connection using OCI Site-to-Site VPN to a Dynamic Routing Gateway (DRG) in VCN 1. The DRG also has a bi-directional connection using remote peering to a DRG in VCN 2.

Private subnet A's data integration compartment connects to private subnet B's Oracle Autonomous Data Warehouse, which connects to the resources in OCI region 2's OSN. An external user connects to both the public subnet A (through an Internet gateway), and to OSN in Region 2.