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Architecture & Engineering

CI/CD

CI/CD is the practice of automatically building and testing every code change (continuous integration) and automatically releasing changes that pass (continuous delivery or deployment). Its purpose is to make releases small, frequent and boring, because small changes are easier to verify and cheaper to reverse.

The counter-intuitive result is that deploying more often makes systems more stable, not less. A release containing one change has an obvious culprit when something breaks; a release containing two hundred does not. Frequency also forces the automation — tests, migrations, rollback — that makes each deployment safe.

The pipeline is only as valuable as the tests it runs. A CI system that runs a suite nobody trusts produces the worst outcome: a green check that means nothing, and engineers who learn to ignore failures. Meaningful, fast, deterministic tests are the actual investment; the pipeline is the cheap part.

Codazz builds this in production — CI/CD Pipelines.

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Continuous delivery means every passing change is releasable, but a human decides when to release. Continuous deployment removes that step — anything passing the pipeline goes to production automatically. Delivery suits regulated environments and coordinated launches; deployment suits teams with strong automated testing and fast rollback.

Related terms

Blue-Green Deployment

Blue-green deployment runs two identical production environments, with only one serving live traffic.

Containerization

Containerization packages an application together with its dependencies, libraries and configuration into a single image that runs identically on any machine with a container runtime.

Infrastructure as Code

Infrastructure as code means defining servers, networks, databases and permissions in version-controlled configuration files rather than configuring them by hand.

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