# Composition Root

> The single startup location where an application's object graph is assembled and its dependencies wired.

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

Listed in [Lexicon terms](https://banes-lab.com/api/records/lexicon.md), after [Code Generation](https://banes-lab.com/records/lexicon/code-generation.md) and before [Context](https://banes-lab.com/records/lexicon/context.md).

## Category

- [Core Vocabulary](https://banes-lab.com/records/lexicon-category/core-vocabulary.md)

## Required by

- [Inversion of Control](https://banes-lab.com/records/architecture/inversion-of-control.md)
- [Dependency Injection](https://banes-lab.com/records/architecture/dependency-injection.md)

## Linked from

- [Plugin / Extensibility / IoC](https://banes-lab.com/ontology/principles/architecture-category-plugin-extensibility-ioc.md)