---
title: "Best practises and conventions"
manual: "TYPO3 Explained"
version: "11.5"
permalink: "https://docs.typo3.org/permalink/t3coreapi:extension-best-practises@11.5"
source: "ExtensionArchitecture/BestPractises/Index.rst"
rendered: "2026-10-21T15:30:00+00:00"
---

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<a id="extension-conventions"></a>

# Best practises and conventions {#extension-best-practises}

-   [Choosing an extension key](https://docs.typo3.org/permalink/t3coreapi:choosing-an-extension-key@11.5)
-   [Naming conventions](https://docs.typo3.org/permalink/t3coreapi:naming-conventions@11.5)
-   [Configuration Files (ext_tables.php & ext_localconf.php)](https://docs.typo3.org/permalink/t3coreapi:configuration-files-ext-tables-php-ext-localconf-php@11.5)
-   [Software Design Principles](https://docs.typo3.org/permalink/t3coreapi:software-design-principles@11.5)