---
title: "YAML"
manual: "TYPO3 Explained"
version: "11.5"
permalink: "https://docs.typo3.org/permalink/t3coreapi:yaml@11.5"
source: "Configuration/Yaml/Index.rst"
rendered: "2026-10-21T15:30:00+00:00"
---

. include:: /Includes.rst.txt

# YAML {#yaml}

YAML is used in TYPO3 for various configurations; most notable are

-   [Event listeners](https://docs.typo3.org/permalink/t3coreapi:eventdispatcher@11.5) in [Configuration/Services.yaml](https://docs.typo3.org/permalink/t3coreapi:servicesyaml@11.5)
-   [Dependency injection](https://docs.typo3.org/permalink/t3coreapi:dependencyinjection@11.5) information in [Configuration/Services.yaml](https://docs.typo3.org/permalink/t3coreapi:servicesyaml@11.5)
-   [Site configuration](https://docs.typo3.org/permalink/t3coreapi:sitehandling@11.5) in `sites/<identifier>/config.yaml`
-   System extension [form](https://docs.typo3.org/c/typo3/cms-form/11.5/en-us/Index.html) configuration
-   System extension [rte_ckeditor](https://docs.typo3.org/c/typo3/cms-rte-ckeditor/11.5/en-us/Index.html) configuration

-   [YAML API](https://docs.typo3.org/permalink/t3coreapi:yaml-api-1@11.5)
-   [YAML syntax](https://docs.typo3.org/permalink/t3coreapi:yaml-syntax-1@11.5)
-   [Services.yaml](https://docs.typo3.org/permalink/t3coreapi:services-yaml@11.5)