Private Cloud Network
Private Cloud Network
Our cloud application is growing. Some resources must be accessible to everyone. A web server should accept requests from the internet. But should the database also be visible to the world? Should internal services be directly accessible from outside? Absolutely not. The engineering problem became clear. How do we isolate cloud resources while allowing only the required communication? The engineering concept that solved this problem is the Virtual Private Cloud (VPC). Think of it as your own private network inside the public cloud. Within this network, you decide which resources are public, which remain private, and who can communicate with whom. Web servers can be placed in a public subnet. Databases can remain in a private subnet, inaccessible from the internet. Firewalls, routing rules and gateways control how traffic flows between them. Instead of one open environment, the cloud becomes a carefully designed network. Amazon Web Services provides this through Virtual Private Cloud (VPC). Microsoft Azure provides Azure Virtual Network (VNet). Google Cloud provides Virtual Private Cloud (VPC). Different names. One engineering concept. Applications became secure by design, exposing only what needed to be exposed. But another challenge soon appeared. Building the application was no longer the difficult part. How do we release new versions quickly, safely and repeatedly?