What is CI/CD
Automation that tests every proposed change and moves approved code toward live users without manual steps.
In plain terms
Continuous integration runs the test suite against every proposed change automatically. Continuous delivery automates the path from acceptance to going live. Together they are the safety rail that lets a team ship often. The configuration lives as a visible file in the repository, commonly GitHub Actions.
What it tells you about a developer
A developer whose personal repositories carry CI configuration applies professional guardrails even when nobody requires it. That habit correlates with production-readiness and low-supervision work.