From 1.2GB to 24MB: How I Sped Up Our Next.js CI/CD Pipeline by 4 in One Afternoon

The Situation Our team's CI/CD pipeline on Azure DevOps was taking 15 minutes to complete on every push to develop. You'd merge a PR, grab a coffee, come back — and it was still running. A 15-minute feedback loop breaks flow state — by the time the pipeline finishes, you've already switched context twice and forgotten what you were checking. I spent an afternoon digging into the Azure DevOps logs. Here's what I found. The Numbers (Before) Artifact content (uncompressed): 1,218 MB (1.2 GB) Artifact downloaded (compressed): 614 MB Download time: 3-4 min Pipeline breakdown: Build stage: ~5 min (Docker build + artifact) Download artifact: ~3 min (614 MB over the wire) Configure App Service: 2m54s (5 Azure API calls) Deploy (AzureWebApp@1): ~1 min Validate: 2m07s (sleep 30 + 3×30s probes) ───────────────────────────────── Total: ~15 min Root Cause #1: Ignoring output: 'standalone' next.config.js had this: const nextConfig = { output : ' standalone ' , // ← was there the whole time ... }; output: 'standalone' tells Next.js to produce .next/standalone/ — a self-contained directory with only what's needed at runtime. Trimmed node_modules . Auto-generated server.js . No source files. No dev dependencies. But the pipeline was ignoring it: # Old pipeline — copies everything from Docker docker cp deployImage:/app/node_modules . # 600 MB 😱 docker cp deployImage:/app/src . docker cp deployImage:/app/.next . docker cp deployImage:/app/server.js . # ... more files /bin/zip -r deploy.zip .env .next public node_modules package.json \ next.config.js jsconfig.json postcss.config.mjs decs.d.ts src server.js # Then published the ENTIRE working directory as the artifact - task : PublishPipelineArtifact@0 inputs : targetPath : ' $(System.DefaultWorkingDirectory)' # 1.2 GB of loose files + zip Azure DevOps compressed this to 614 MB for transfer. The deploy stage downloaded 614 MB to use a 24 MB zip buried inside it. The fix: # New pipeline — standalone only docker cp deployImage:/app/.next/