AWS Notes Explained

This is a study guide and quick-reference cheat sheet for AWS exam preparation—specifically for becoming a Solutions Architect. Instead of teaching you how to write code or build things from scratch, it's about learning to pick the right AWS services and combine them to solve business problems with minimal manual work. Think of it as a playbook of AWS services and when to use each one.

The core philosophy is simple: AWS wants you to use *managed services*—meaning you hand off infrastructure tasks to AWS rather than managing servers yourself. The guide hammers this repeatedly. Instead of worrying about how databases or servers actually run, you just pick the service that does what you need (like DynamoDB for storing user sessions, or CloudFront for delivering files fast globally), configure it, and let AWS handle the rest. The guide also emphasizes understanding what each service *actually does* by reading its name carefully and asking yourself: "What do I have, and what do I need to do?"

You'd use this if you're preparing for an AWS certification exam, especially the Solutions Architect level, where questions test whether you understand which service solves which problem. It covers everything from databases (RDS, DynamoDB, Redshift) to networking (Route 53, Transit Gateway) to security (Secrets Manager, WAF) to AI tools (SageMaker, Rekognition). For each service, it includes a one-liner or key fact—like "Lambda only for jobs under 15 minutes" or "Security Groups allow, they don't deny." The guide also includes practical wisdom: avoid changing code if possible, use roles instead of direct permissions, and when you're stuck on an exam question, eliminate obviously wrong answers first.

The tone is irreverent and opinionated (hence the Jeff Bezos framing), but the content itself is genuine exam prep material. It's most useful as a companion study resource—read it before exams or when you need to refresh what a particular AWS service does and when to reach for it instead of a competitor.