Title: Plugins – Page 9 – WordPress Developer Blog

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# Plugins

 * 
   ## 󠀁[How to extend WordPress via the SlotFill system](https://developer.wordpress.org/news/2022/11/how-to-extend-wordpress-via-the-slotfill-system/)󠁿
   
 * By [Ryan Welcher](https://profiles.wordpress.org/welcher/)
 * November 18, 2022
 * [Advanced](https://developer.wordpress.org/news/category/advanced/), [Concepts](https://developer.wordpress.org/news/category/concepts/),
   [Plugins](https://developer.wordpress.org/news/category/plugins/)
 * In WordPress 5.0, the WordPress SlotFill system was introduced as part of the
   Gutenberg project and is the extension paradigm that allows developers to extend
   the UIs introduced with the Gutenberg project such as the Post Editor and the
   Site Editor.

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