# Domain Core

> The requirement that pure domain logic occupy the core, isolated from external concerns.

Record: `lex:domain-core`
Kind: constraint
Layer: [Structural Core](https://banes-lab.com/records/layer/structural-core.md)
Canonical: https://banes-lab.com/ontology/lexicon#lex-domain-core

## category

- [Codebase / System Architecture Styles](https://banes-lab.com/records/lex-category/codebase-system-architecture-styles.md)

## referenced-by

- [Hexagonal Architecture](https://banes-lab.com/records/arch/hexagonal-architecture.md)