AWS Basics But Needs to Be Known Before You Start Your Certification

You don't need to memorize 200 services to start your AWS journey. But you do need to understand the foundations. Here's everything I wish someone had explained to me before I started studying for my AWS certification. 1. What Even Is Cloud Computing? Let's start from the very beginning. Cloud computing sounds fancy, but the core idea is simple: there's a physical server somewhere, and you're renting it over the internet. Instead of buying your own hardware, setting up a server room, and hiring people to maintain it — you use someone else's infrastructure (like AWS) and pay only for what you use. Here's the official NIST definition: "A model for enabling ubiquitous, convenient, on-demand network access to a shared pool of **configurable computing resources* that can be rapidly provisioned and released with minimal management effort or service provider interaction."* Let's break that down into human language: On-demand → You get resources whenever you want them Shared pool → Multiple cu