Automatically testing every code change and deploying it, so updates ship quickly with fewer mistakes.
CI/CD stands for continuous integration and continuous delivery or deployment. Continuous integration means every code change is checked automatically: the app is built and tests run. Continuous delivery means a passing change moves to staging or production automatically, without manual steps.
This automation keeps obvious bugs from reaching customers and turns deployment into routine instead of a stressful event. It matters even more when AI writes much of the code, because automated tests become your main safety net. Practical tip: start with simple tests for critical paths: sign-in, adding a product to the cart and completing a test payment. Block deployment if any of them fail. Those few tests protect you from most costly mistakes.