Multi-VPC architecture in AWS

akuson daniel — Tue, 23 Sep 2025 11:57:48 +0000

This project implements a secure, scalable multi-VPC network architecture that simulates real-world enterprise networking requirements. The solution demonstrates how organizations can segment their cloud infrastructure while maintaining controlled connectivity between different business units or environments.
This project demonstrates the creation of two Virtual Private Clouds (VPCs) in AWS and the establishment of a VPC Peering Connection to enable communication between them.
In real-life business solutions, organizations often use multiple VPCs to:

1-Separate production and development workloads.
2-Comply with regulatory and security requirements (example is isolating payment systems).
3-Allow different teams or subsidiaries to work independently while maintaining secure interconnectivity.

VPC-A (10.10.0.0/16)

Public Subnet: Hosts customer-facing applications.

Private Subnet: Hosts backend databases.

VPC-B (10.20.0.0/16)

Public Subnet: Hosts shared services like APIs.

Private Subnet: Hosts internal analytics systems.

VPC Peering Connection

Enables private communication between the two environments.

Routing ensures data flows only through the peering link.

DEV Community: akuson daniel

Multi-VPC architecture in AWS