Master AWS Cloud Computing From Scratch

Clear, interactive, and structured AWS lessons designed for absolute beginners.

VPC Core Concepts

A VPC is a logical network boundary containing subnets and routing. Subnets are associated with Availability Zones, and route tables decide where traffic goes.

Why it matters

A clear network design is essential for secure cloud applications.

How it works

Create VPC → create subnets → associate route tables → add required gateways → attach security controls → deploy resources.

Real-world example: Separate public-facing components from private application and database components.

Core Concept

A VPC contains subnets, route tables, gateways and security controls.

Choose a non-overlapping CIDR range that can accommodate expected growth.

VPCPublic SubnetLoad BalancerInternet Gateway routePrivate SubnetApp / DatabaseNo direct inbound internet

What you should remember

Key idea

A VPC contains subnets, route tables, gateways and security controls.

Key idea

Choose a non-overlapping CIDR range that can accommodate expected growth.

Real-world example

Use a realistic cloud workload and focus on the responsibility of this AWS service.

User → AWS service → application → data / response

Choose the service that matches the responsibility instead of forcing every workload into one resource.

# Conceptual workflow aws-service --resource example # Verify configuration → test → monitor → clean up
Practice tip: Build the smallest possible lab, verify the result, then remove resources you no longer need.

Quick Test

1 Question

What is the main idea of this AWS lesson?