AI Glossary Term

What does “Model Registry” mean?

Definition

A central catalog for versioning, approving, and tracking models across environments.

How Model Registry works

Diagram for Model Registry, steps in order: Train a model; then Register version + metrics; then Review and approve; then Promote to production; then Roll back if needed.Train a modelRegister version + metricsReview and approvePromote to productionRoll back if needed

Example

A team keeps every trained model with its data version, scores, and approval status in a registry. If version 7 misbehaves in production, they roll back to version 6 in minutes.

Why it matters

A registry gives traceability and control over which model is live. It helps audits and safe rollbacks.

Common questions

What does it store?

Model files, version numbers, metrics, lineage, and approval stages.

Do I need one?

For a single hobby model, no. For teams running several, it prevents confusion.

Does it connect to deployment?

Often yes, so approved versions can be deployed automatically.

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See also