This image shows an Oracle Cloud Infrastructure (OCI) region with Oracle Cloud Infrastructure Identity and Access Management, Logging, Health Check, Auditing, Monitoring, and Cloud Guard enabled.

The region has three availability domains and a single virtual cloud network (VCN) with a single subnet that provides a security list and a route table.

The VCN provides the following gateways:

• Internet gateway: Customers connect by using a web application firewall (WAF) for communications between public subnets and internet hosts.
• Dynamic routing gateway (DRG): Developers connect by using Site-to-Site VPN for private connectivity between on-premises networks and VCNs.

Within the subnet, the following resources are arranged by functional group:

• Load balanced indexing and search servers (Windows): Contains a load balancer and web server virtual machines (VMs) that span availability domains 1 and 2. These resources connect with indexing and search servers and Redis/file system servers.
• Load balanced web servers: Contains a load balancer and indexing and search GPU VMs that span availability domains 1 and 2. These resources connect with backend indexing servers and Redis/file system servers.
• Redis/file system (Linux): Contains a VM, a database system, and a GlusterFS file system in each of the availability domains. These resources connect with the MySQL Database service.
• MySQL Database service HA: Provides MySQL Database service in each of the availability domains. These resources connect with the backend indexing servers.
• Backend indexing servers (Linux): Provides VMS in availability domains 1 and 2. These resources connect with the MySQL Database services.
• SFTP server: Provides a VM in availability domain 3 for secure file transfer.