# Implementation-First Integration

> Integrating against a concrete implementation before agreeing a contract, coupling consumers to internals.

Record: `lexicon:implementation-first-integration`
Kind: anti-pattern
Layer: [Contracts Core](https://banes-lab.com/records/layer/contracts-core.md)
Canonical: https://banes-lab.com/ontology/lexicon#lexicon-implementation-first-integration

Listed in [Lexicon terms](https://banes-lab.com/api/records/lexicon.md), after [Hidden Service Coupling](https://banes-lab.com/records/lexicon/hidden-service-coupling.md) and before [Implicit Assumptions](https://banes-lab.com/records/lexicon/implicit-assumptions.md).

## Category

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

## Negated by

- [Contract-First Design](https://banes-lab.com/records/architecture/contract-first-design.md)

## Linked from

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