Continuous Integration/Continuous Deployment - automated process for testing and deploying code changes quickly and safely. Like an assembly line that automatically tests and ships products.
When developers push code changes, CI/CD automatically runs tests and deploys to production if everything passes, enabling multiple releases per day.
All providers offer managed CI/CD. AWS typically composes CI/CD from CodePipeline/CodeBuild/CodeDeploy, Azure uses Azure Pipelines as an integrated CI/CD service, GCP commonly uses Cloud Build for CI and Cloud Deploy for progressive delivery to GKE/Cloud Run, and OCI DevOps provides build and deployment pipelines with integrations to OCI services.