Setting up a secure AWS network is a foundational task for cloud infrastructure. This guide walks through creating a VPC with public and private subnets, and a NAT Gateway for outbound internet access from private resources. It covers key Terraform resources like aws_vpc, aws_subnet, and aws_nat_gateway, along with routing tables and internet gateway configuration. The pattern is widely used for hosting web applications where databases and backend services remain private. While the approach is standard, understanding the resource dependencies and CIDR planning is crucial for avoiding common pitfalls. This reference is valuable for DevOps engineers building repeatable infrastructure.
A practical guide to building AWS VPC with public/private subnets and NAT Gateway using Terraform.