A PaaS (deploy Backend)

• You don’t write infrastructure config
• Just link Github repo / Dockerfile
• Even no CI/CD needed, only if u want:
  • Run tests before deploy
  • Linting / quality gates
  • Multi-env promotion (dev → staging → prod)
  • Security scans
• Railway infers what to do:
  • servers
  • builds
  • deployments
  • networking
  • scaling (to a certain extent)
• Complex stack like kafka still need external services

Auto detect when push a repo:

• package.json → Railway assumes Node.js
• pom.xml → Java / Spring Boot
• requirements.txt → Python
• Dockerfile → uses Docker directly

Internal Railway flow:

1. Push github repo
2. GitHub webhook triggers Railway
3. Detects runtime
4. Chooses a build image
5. Runs default build command