Networking
VPC, Route 53, CloudFront, load balancers, and connectivity services. Understand subnets, security groups, peering, and content delivery — the plumbing of AWS architectures.
Amazon API Gateway: REST, HTTP & WebSocket APIs on AWS
Amazon API Gateway is AWS's managed API service. Learn REST vs HTTP vs WebSocket APIs, integrations with Lambda, auth (IAM, Cognito, Lambda authorizers), throttling, and pricing.
Amazon Route 53: DNS, Routing Policies & Health Checks
Amazon Route 53 is AWS's DNS service with 100% availability SLA. Learn routing policies (Simple, Weighted, Latency, Failover, Geo), health checks, alias records, and domain registration.
Amazon CloudFront: AWS CDN, Edge Locations & Pricing
Amazon CloudFront is AWS's CDN with 600+ edge locations. Learn distributions, origins, cache behaviors, OAC, signed URLs, CloudFront Functions vs Lambda@Edge, and pricing.
ALB vs NLB: When to Use Each AWS Load Balancer
Compare AWS Application Load Balancer (ALB, Layer 7) vs Network Load Balancer (NLB, Layer 4): routing, protocols, latency, static IPs, source IP preservation, and pricing.
Amazon VPC: Subnets, Gateways & Networking Explained
Amazon VPC is a logically isolated AWS network. Learn subnets, route tables, internet gateway vs NAT gateway, security groups vs NACLs, peering, and exam tips.