Guide to AWS's Default VPC and Why Users Should Build Their Own

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A DEV Community tutorial walks through the default VPC that every AWS account receives, including its subnets, route table, internet gateway, network ACL and security groups. It explains that a VPC is an isolated network within a single region, comparable to Azure's VNet, with the key difference that AWS subnets are tied to individual Availability Zones. The author examines the default VPC's 172.31.0.0/16 range, its three per-zone subnets, and the routing setup that makes them publicly reachable. The piece concludes by showing how to create a custom VPC after understanding these default components.

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