☁️

AWS VPC Networking: Subnets, Routing & Security

Medium

Free preview · 2 of 5 steps

VPC: your private network inside AWS

A VPC (Virtual Private Cloud) is an isolated virtual network in AWS. You define IP ranges, subnets, routing, and access controls — AWS manages the underlying physical network.

The key decision: public vs private subnets. Public subnets route to the Internet Gateway and are directly reachable. Private subnets route to NAT Gateway for outbound-only internet access — databases, application servers, and workers live here.

Packets in motion — click to inspect:

1 / 2

Space to play/pause · ← → to step