What a CI/CD Pipeline Actually Does

CI/CD is the automated path from a commit to production: every change is built and tested automatically, and releases become small, frequent, and safe to roll back.

1. CI: Continuous Integration Continuous Integration means every change you push is automatically built and tested by a server, so breakage surfaces in minutes - the red/green gate that protects the shared branch.
2. CD: Delivery vs Deployment CD means two different things - continuous delivery (always release-ready, a human clicks deploy) and continuous deployment (every green change ships automatically); plus the build→test→deploy stages and gentle deploy strategies.
3. Why It's Worth It CI/CD pays off through small frequent releases, fast feedback, and rollback confidence - but a pipeline is only as trustworthy as the tests inside it, and flaky tests poison the whole thing.