Master AWS Cloud Computing From Scratch

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

EC2 Core Concepts

Important EC2 concepts include AMIs, instance types, EBS volumes, security groups, key pairs, subnets and public/private networking.

Why it matters

Each concept controls a different part of the virtual server environment.

How it works

AMI provides the starting image, instance type supplies compute capacity, EBS stores persistent block data, security groups control network traffic, and networking determines reachability.

Real-world example: A small Linux API server may use a lightweight instance type, an EBS root volume and a security group allowing only required traffic.

Core Concept

An instance is launched from an AMI and runs with an instance type, network settings, storage and security controls.

Example: host a Spring Boot application on an Ubuntu EC2 instance.

AMIOS + softwareEC2 InstanceComputeNetwork + StorageApplicationSpring Boot

What you should remember

Key idea

An instance is launched from an AMI and runs with an instance type, network settings, storage and security controls.

Key idea

Example: host a Spring Boot application on an Ubuntu EC2 instance.

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?