awslisted

# AWS Hosting AWS provides the broadest set of cloud services. This skill covers the most common hosting patterns for web applications, APIs, and background services, with infrastructure-as-code via AWS CDK. ## Architecture Decision Tree ``` What are you deploying? ├─ Static site (HTML/CSS/JS) ──────────> S3 + CloudFront ├─ Server-rendered app (Next.js, etc.) ─> ECS Fargate or Lambda ├─ REST/GraphQL API ───────────────────> Lambda + API Gateway OR ECS Fargate + ALB ├─ Long-running background workers ────> ECS Fargate (always-on) or EC2 ├─ Event-driven functions ─────────────> Lambda (triggered by SQS, S3, EventBridge) ├─ Containerized microservices ────────> ECS Fargate + ALB + Service Connect └─ Full control over the VM ───────────> EC2 (last resort) ``` ## EC2 — Virtual Machines Use EC2 only when you need full OS-level control, GPU instances, or specific hardware. For most web apps, prefer ECS Fargate or Lambda. ```typescript // CDK: EC2 instance import * as ec2 from 'aws-cdk-lib/aws-ec2'; const vpc = new ec2.Vpc(this, 'Vpc', { maxAzs: 2 }); const instance = new ec2.Instance(this, 'WebServer', { vpc, instanceType: ec2.InstanceType.of(ec2.InstanceClass.T3, ec2.InstanceSize.MICRO), machineImage: ec2.MachineImage.latestAmazonLinux2023(), keyPair: ec2.KeyPair.fromKeyPairName(this, 'KeyPair', 'my-key'), }); instance.connections.allowFromAnyIpv4(ec2.Port.tcp(80)); instance.connections.allowFromAnyIpv4(ec2.Port.tcp(443)); ``` ## ECS Fargate — Serverless Container