How can network segmentation be implemented in OCI?

Network segmentation in Oracle Cloud Infrastructure (OCI) can be effectively achieved through the use of Virtual Cloud Networks (VCNs) and subnets. A Virtual Cloud Network is a customizable private network in OCI where you can define the IP address space, create subnets, and configure routing and security settings.

Subnets are subsets of VCNs that allow for more granular control over network resources, including the ability to enforce distinct security measures and routing rules for different segments of your infrastructure. This helps in isolating workloads, controlling traffic, and enforcing security policies based on the sensitivity and requirements of the applications running within those segments.

By creating different subnets within a VCN, you can segment resources according to their security level, application type, or any other criteria, which enhances both security and performance. This approach enables better management of resources and can help in compliance with regulatory requirements as well.

While other options mention components relevant to networking in OCI, they do not directly represent a complete solution for network segmentation as effectively as VCNs and subnets do. For instance, security lists and application gateways may assist in securing network traffic but do not inherently partition the network. Similarly, load balancers and firewalls serve specific functions in traffic management and security but do