What is Internet Gateway in AWS? Complete Beginner Guide (2026)
Learn what an Internet Gateway in AWS is and how it enables internet access in a VPC. Step-by-step explanation with routing, examples, and architecture diagrams.
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What is a Subnet in AWS? Public vs Private Subnets Explained (2026)
Learn what a subnet in AWS is and how public and private subnets work. Complete beginner-friendly guide with architecture, routing, and real-world examples. Introduction A subnet in AWS is a smaller network inside a Virtual Private Cloud (VPC) that helps you organize and secure your cloud resources. If you don’t understand subnets, you don’t understand AWS networking. In this guide, you’ll learn: What a subnet is Types of subnets How routing works Real-world architecture Common mistakes beginners make What is a Subnet in AWS? A subnet (short for subnetwork) is a division of a VPC’s IP address range into smaller segments. In Amazon Web Services , subnets allow you to: Organize resources Control network traffic Apply security boundaries TL/DR A subnet is a logical partition of a VPC where you place your AWS resources like EC2 instances. Why Subnets Are Important Without subnets: All resources are in one flat network No proper isolation Security risk...