AWS Cloud
ap-northeast-2
Production VPC (10.0.0.0/16)
IGW
Internet Gateway
Public Subnet (10.0.1.0/24) — AZ-a
NAT
NAT Gateway
ALB
Application LB
Private Subnet (10.0.10.0/24) — AZ-a
Auto Scaling Group
EC2
Web Server 1
EC2
Web Server 2
EC2
(scaling)
Public Subnet (10.0.2.0/24) — AZ-c
NAT
NAT Gateway
ALB
Application LB
Cross-AZ
Private Subnet (10.0.20.0/24) — AZ-c
Auto Scaling Group
EC2
Web Server 3
EC2
Web Server 4
EC2
(scaling)
DB Subnet (10.0.100.0/24)
RDS
Aurora Primary
(Writer)
RDS
Aurora Replica
(Reader)
Async Replication
Legend
Public Subnet
Private Subnet
DB Subnet
Sync Traffic
Async / Data Flow
3-Tier VPC Architecture — Generated by architecture-diagram-agent