Gutenberg is a block-based content management system editor for WordPress. It serves as a modular page builder and React-based content editor where website pages and posts are composed of discrete, reusable blocks rather than a single text area.
The system enables visual content authoring through a modular interface used to arrange layout and media. It supports WordPress block development, allowing for the creation of custom modular elements and the extension of editor functionality through specialized plugins.
The editor provides capabilities for dynamic content management and the creation of reusable content blocks to structure web pages.