AWS Multi-AZ VPC with VPN and NAT Gateway — AWS architecture diagram

About This Architecture

Multi-AZ VPC spanning us-east-1a and us-east-1b with redundant NAT Gateways, Application Load Balancers, and RDS Multi-AZ deployment across public, private app, and private data subnets. Internet Gateway routes public traffic to ALBs, which distribute requests to EC2 t3.medium instances in private subnets; private instances egress through NAT Gateways to the internet. Virtual Private Gateway establishes site-to-site VPN from on-premises Customer Gateway to EC2 and RDS instances, enabling secure hybrid access. This architecture eliminates single points of failure, ensures data durability through RDS Primary-Standby replication, and enforces network segmentation via subnet-level routing. Fork and customize this diagram on Diagrams.so to adjust CIDR blocks, instance types, or add additional AZs for your production workload. Consider adding VPC Flow Logs and AWS Systems Manager Session Manager for enhanced observability and secure instance access.

People also ask

How do I design a highly available AWS VPC with site-to-site VPN, redundant NAT Gateways, and RDS failover across multiple availability zones?

This diagram shows a production-ready multi-AZ VPC with public subnets hosting NAT Gateways and ALBs, private app subnets running EC2 instances, and private data subnets with RDS Primary-Standby replication. A Virtual Private Gateway establishes secure VPN from on-premises to the VPC, while Internet Gateway enables public traffic routing. Each AZ has independent NAT Gateways and ALBs to eliminate

AWS Multi-AZ VPC with VPN and NAT Gateway

AWSadvancedVPCmulti-AZVPNNAT Gatewayhigh availability
Domain: Cloud AwsAudience: AWS solutions architects designing highly available multi-AZ VPC architectures with hybrid connectivity
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Created by

August 15, 2026

Updated

August 15, 2026 at 7:10 AM

Type

network

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