AI Governance Engineer
GitHub

Blue-green deployment

By Updated

Two identical production environments with traffic switched between them, so a release can be rolled back by switching back 1. It gives an AI system a tested, instant path to the previous version.

Developed in
ch. 15, Progressive delivery as a control
ch. 05, Pattern: Staged Rollout with Rollback Criteria
Chapters
ch. 05, Patterns · ch. 15, Deployment
Contrast with
Canary release
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…

  • Shadow deployment

    A release stage in which a new model or system receives live inputs but its outputs are not used, so its behaviour on real traffic can be compared with the…

  • 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.

Sources

  1. [1] "BlueGreenDeployment" (two identical production environments; switch back on failure). Martin Fowler. 2010-03-01. https://martinfowler.com/bliki/BlueGreenDeployment.html (verified: primary)

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

Cite this term

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

BibTeX

@misc{aige2026bluegreendeployment,
  author  = {Jorge García Aibar},
  title   = {{Blue-green deployment}},
  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/blue-green-deployment}
}