Netlify CMS is an open-source, Git-based content management system. It provides a single-page app for editing content and can publish that content by committing it to a hosted Git repo (for example on GitHub or GitLab).

Adding Netlify CMS to an Astro site would usually involve creating a number of files in different parts of your project directory and then keeping all those moving parts in sync. With the astro-netlify-cms integration, you configure the integration in your astro.config.mjs file and the integration takes care of the rest.