# Compatibility Adapter

> A technique for serving an old contract through an adapter over the new one while consumers migrate.

Record: `lexicon:compatibility-adapter`
Kind: technique
Layer: [Contracts Core](https://banes-lab.com/records/layer/contracts-core.md)
Canonical: https://banes-lab.com/ontology/lexicon#lexicon-compatibility-adapter

Listed in [Lexicon terms](https://banes-lab.com/api/records/lexicon.md), after [Backward-Compatible Change](https://banes-lab.com/records/lexicon/backward-compatible-change.md) and before [Gradual Deprecation](https://banes-lab.com/records/lexicon/gradual-deprecation.md).

## Category

- [Contracts / Interfaces / Compatibility](https://banes-lab.com/records/lexicon-category/contracts-interfaces-compatibility.md)

## Refactors

- [Unversioned Breaking Change](https://banes-lab.com/records/architecture/unversioned-breaking-change.md)
- [Cyclic Deployment Dependency](https://banes-lab.com/records/architecture/cyclic-deployment-dependency.md)

## Linked from

- [Anti-patterns](https://banes-lab.com/ontology/principles/architecture-category-anti-patterns.md)