CI/CD Basics

CI runs verification automatically when code changes. CD ships verified code to an environment. Good pipelines reduce manual release mistakes.

Typical pipeline:

install -> lint/test -> build -> deploy

TIP

CI should run the same commands developers run locally, or failures become hard to reproduce.

Further Learning

“CI CD pipeline basics” — workflow model
“GitHub Actions Node pnpm” — common implementation
“build artifact deployment” — reproducible release output

CI/CD Basics

CI/CD lets robots handle the repetitive, error-prone parts of shipping software:

CI (Continuous Integration) — automatically test every change before it merges.
CD (Continuous Deployment) — automatically ship verified code to a real environment.

A typical pipeline

install → lint/test → build → deploy

Every step must pass before moving to the next. If tests fail, the deploy simply doesn’t happen — no human has to remember to block it.

TIP

CI should run the exact same commands a developer runs locally (npm test, npm run build). If CI does something different, failures become confusing and hard to reproduce.

Why this matters

Without CI/CD, “did I remember to run the tests before deploying?” is a human responsibility — and humans forget, especially under deadline pressure. Automating it means broken code simply can’t reach production, no matter who’s in a hurry.

In one sentence

CI automatically verifies every change (lint, test, build), and CD ships the verified result automatically — together they remove the risk of a human forgetting a step before shipping.

Want to go deeper?

Switch to Expert mode above for a real GitHub Actions pipeline setup.