What is CI/CD (Continuous Integration / Continuous Deployment)?
Automated pipelines that test your code when you push changes (CI) and deploy it to production automatically when tests pass (CD).
In plain English
Like a quality control line in a factory. Every product (code change) goes through inspection (tests) before it's shipped (deployed). If inspection fails, the product is sent back for fixes. No defective products reach customers.
Continuous Integration (CI)
Every time you push code to GitHub, automated checks run: TypeScript compilation, linting, tests, and build verification. If any check fails, you're notified immediately. This catches bugs within minutes of introduction, rather than discovering them in production days later.
Continuous Deployment (CD)
When all CI checks pass on your main branch, the code is automatically deployed to production. No manual steps, no forgotten configurations. Vercel and Netlify provide this out of the box — push to main, and your site updates within minutes.
Setting up CI for AI-built apps
Create a .github/workflows/ci.yml file in your repository. A basic CI pipeline: install dependencies, run TypeScript compiler, run linter, run tests, build the project. GitHub Actions' free tier is sufficient for most projects. This takes 30 minutes to set up and prevents countless production issues.
Frequently asked questions
Do I need CI/CD for a small app?
Yes — especially for a small team. With CI/CD, you don't need to remember to run tests or worry about deploying incorrectly. Even a basic pipeline (build + test on push) catches the majority of issues before they reach users.
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Related terms
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