How would you design a CI/CD pipeline for a web application?

Pipeline stages: 1) Source (trigger on commit/PR), 2) Build (compile, install dependencies, build artifacts), 3) Unit Tests (fast, parallel), 4) Static Analysis (linting, security scan, code quality), 5) Integration Tests (with test databases), 6) Build Container Image, 7) Deploy to Staging (automatic), 8) E2E Tests, 9) Manual Approval (for production), 10) Deploy to Production (with health checks), 11) Smoke Tests. Include rollback mechanism. Use caching for speed. Parallelize where possible. Fail fast principle.