+.. include:: ../../Includes.txt
+
+================================================================
+Deprecation: #80048 - Mark ExtJS related API calls as deprecated
+================================================================
+
+See :issue:`80048`
+
+Description
+===========
+
+The usage of ExtJS has been marked as deprecated. Therefore the following methods of :php:`ExtensionManagementUtility` have been marked as deprecated:
+
+- :php:`addExtJSModule`
+- :php:`registerExtDirectComponent`
+
+
+Impact
+======
+
+Calling any of the PHP methods will trigger a deprecation log entry.
+
+
+Affected Installations
+======================
+
+Any TYPO3 installation working with custom extensions that use any of these methods.
+
+
+Migration
+=========
+
+All of the functionality is obsolete or outdated and should be handled differently from now on:
+
+1. Use :php:`ExtensionManagementUtility::addModule` instead of :php:`addExtJSModule`.
+
+2. Some ajax routes_ instead of ExtDirect.
+
+.. _routes: https://docs.typo3.org/typo3cms/InsideTypo3Reference/CoreArchitecture/Backend/Routing/Index.html
+
+.. index:: Backend, PHP-API