AI Governance Engineer
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Canary release

By Updated

A partial, time-limited deployment of a change to a small share of production traffic, evaluated against a control group before the rollout continues 1. For AI systems the evaluation compares live quality, safety and fairness metrics with pre-registered rollback criteria.

Developed in
ch. 15, Progressive delivery as a control
ch. 05, Pattern: Staged Rollout with Rollback Criteria
Chapters
ch. 05, Patterns · ch. 14, Development · ch. 15, Deployment · ch. 23, AI Agents
Contrast with
Shadow deployment · Blue-green deployment
Source
1 numbered reference, listed below

Where it is used

The term is not used under this name in running prose; the sections listed under "Developed in" treat it.

  • Progressive delivery

    Releasing a change to a small, growing share of real traffic in stages (shadow, pilot, canary, general availability), each with rollback criteria registered…

  • Rollback criteria

    The conditions, written into the rollout plan before a release stage starts, under which the pipeline returns to the previous version automatically: a floor…

  • Version pinning

    Fixing, in the registry entry, the exact versions of the model, prompts, retrieval corpus and guardrails a deployed system uses, so what ran is known and any…

  • AI system

    For governance, the object the AI definition brings into scope.

  • Fairness

    The property that a system's outcomes and errors do not unjustifiably disadvantage people or groups.

Sources

  1. [1] The Site Reliability Workbook, ch. 16 "Canarying Releases" ("a partial and time-limited deployment of a change in a service and its evaluation"). Google (O'Reilly). 2018. https://sre.google/workbook/canarying-releases/ (verified: primary)

Definitions of legal terms paraphrase the cited text, which governs. Dated statements are as of .

Cite this term

García Aibar, J. (2026). Canary release. In AI Governance Engineering: The Thesis & Body of Knowledge (v0.5.0), Glossary. https://doi.org/10.5281/zenodo.22956197. https://aigovernanceengineer.com/glossary/canary-release. CC BY 4.0

BibTeX

@misc{aige2026canaryrelease,
  author  = {Jorge García Aibar},
  title   = {{Canary release}},
  note    = {Glossary, AI Governance Engineering: The Thesis \& Body of Knowledge, version 0.5.0},
  year    = {2026},
  doi     = {10.5281/zenodo.22956197},
  url     = {https://aigovernanceengineer.com/glossary/canary-release}
}