: Stateful virtual firewalls that control traffic at the individual instance (server) level.
A is a secure, logically isolated private network established within a public cloud infrastructure . It allows organizations to harness the scalability and cost-efficiency of the public cloud while maintaining the granular control and security typical of a private, on-premises data center. Conceptual Foundation: Private Space in a Public World virtual private cloud
: An Internet Gateway (IGW) acts as the door to the public internet for the VPC. Conversely, a NAT Gateway allows resources in a private subnet to reach out for updates without letting the internet "see" them directly. Security Controls : VPCs use two primary layers of defense: : Stateful virtual firewalls that control traffic at
The Architected Isolation: An Essay on the Virtual Private Cloud (VPC) Conceptual Foundation: Private Space in a Public World
: Stateless layers of security that control traffic entering or leaving an entire subnet.
: Organizations can bridge their VPC with on-premises offices using a VPN or dedicated connections like Direct Connect , enabling "hybrid cloud" architectures where local and cloud resources work as one. The Evolution and Future of VPCs
The functionality of a VPC depends on several critical networking layers that define how data flows and who can access it: