Virtual Cloud Network (VCN) - OCI

 

A virtual cloud network (VCN) is a private network that you create in Oracle Cloud Infrastructure (OCI). You can use VCNs to launch compute instances, store data, and deploy applications. VCNs are logically isolated from each other, and you can control who has access to your resources.

Here is a scenario-based explanation of how VCNs can be used:

Scenario:

        You are a web developer and you want to deploy a new web application to OCI. You create a VCN and launch a compute instance in the VCN. You then deploy your web application to the compute instance.

To make your web application accessible to users on the internet, you create a public subnet in your VCN and attach the compute instance to the public subnet. You then create a security rule in the VCN's security list to allow incoming traffic to the compute instance on port 80.

Now, users on the internet can access your web application by visiting the compute instance's public IP address.

VCNs can be used to create complex network architectures for demanding applications. For example, you can use VCNs to create multiple subnets for different types of traffic, such as web traffic, database traffic, and management traffic. You can also use VCNs to create private networks that are not accessible from the internet.

Here are some additional benefits of using VCNs:

Security: You can use VCNs to isolate your resources from the public internet and from other VCNs. This can help to protect your resources from unauthorized access.

Performance:VCNs are highly performant and can support demanding applications.

Scalability: VCNs are scalable and can grow with your business.

Flexibility: VCNs are flexible and can be used to create a variety of network architectures.

If you are planning to deploy applications to OCI, you should consider using VCNs. VCNs can help you to create a secure, performant, and scalable network for your applications.