CI/CD

Continuous integration and continuous delivery: every change is built and tested automatically and can be released at any time.

Continuous integration means merging small changes often and running the build and tests on each one, so breakage shows up within minutes. Continuous delivery keeps the main branch releasable and makes deploying a button or an automatic step; continuous deployment releases every passing change without a human. Tools such as GitHub Actions run the pipeline, but the practice is the habit of small, tested changes.

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Related terms

Trunk-based development: Everyone merges small changes into one main branch at least daily, instead of keeping long-lived feature branches.
Blue-green deployment: Two identical production environments: the new version goes to the idle one, then traffic switches over, and back if something breaks.
DORA metrics: Research-based measures of software delivery: how fast changes reach production and how often they fail.

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