AWS Tutorial

1. AWS Introduction

The core AWS mental model: pay-for-what-you-use, managed services, regions, and Availability Zones.

2. Compute & Storage: EC2 and S3

EC2 instance types and security groups, S3 buckets and objects, and a real aws s3 cp example.

3. Networking & Databases: VPC and RDS

VPC subnets, why databases live in private subnets, and the value of a managed database with RDS.

4. IAM and Security

Users, groups, roles and policies, the principle of least privilege, and a real IAM policy JSON example.

5. Serverless with Lambda

What Lambda is, a complete function example, and when serverless makes sense versus a regular server.

6. Monitoring with CloudWatch

Metrics, alarms, and log groups, with concrete CLI examples for each.

7. Cost Optimization

Right-sizing, Reserved vs On-Demand vs Spot instances, and common AWS cost pitfalls.

8. AWS Interview Questions

Common AWS interview questions on EC2 vs Lambda, S3 use cases, subnets, RDS, IAM, and cost optimization.