Deployment Concurrency Group - CI/CD Glossary Definition
A deployment concurrency group serializes deploys to an environment so two releases never race each other.
A deployment concurrency group uses the concurrency key with a shared group name so only one deployment to a target runs at a time and newer runs queue or cancel older ones.
By setting concurrency: { group: deploy-prod }, teams prevent overlapping deploys that could leave a target in a mixed state; pairing it with cancel-in-progress skips superseded runs.
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