> For the complete documentation index, see [llms.txt](https://mamawhocode.gitbook.io/aws/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://mamawhocode.gitbook.io/aws/services/network/vpc/igw.md).

# Internet Gateway

at VPC level, provide IPv4 & IPv6 Internet access

## Overview

IGW is a **`door`** that allows public traffic from the Internet to access your VPC. You **attach** an IGW to the VPC. 

## Flow: Make VPC connect to Internet

To make your Public subnet connect to the Internet

1. Attach IGW-id (Internet Gateway) to the Public subnet.
2. Add route table record, that points to igw-id. Ex: 0.0.0.0  --> igw-id