AWS for Developers: The Services You Actually Need to Know (Beginner-> Production)

Most freshers start learning cloud by randomly exploring services. That’s the wrong mental model . AWS is not a list of tools. It’s a system architecture . Once you understand how services connect , cloud stops being confusing. Here’s a developer-first breakdown of the most commonly used AWS services , their use cases , and what works together in production systems . 🌐 1. Entry Layer — How Users Reach Your System These services sit at the edge of your architecture . Route 53 What it is: AWS DNS service. Use case Map domain → AWS resources Route traffic globally Example: myapp.com → Load Balancer / CloudFront CloudFront What it is: Content Delivery Network (CDN) Best for Static websites Media delivery Reducing latency worldwide Common combo CloudFront + S3 Example architecture User → CloudFront → S3 (static site) AWS WAF + Shield Purpose: Security layer WAF protects against: SQL injection XSS malicious traffic Shield protects against: DDoS attacks Used with CloudFront Load Balancer API