Markdown works well in headless CMS platforms when content needs to be reusable across websites, apps, and multiple channels.
With Sanity, the preferred approach is usually Portable Text for rich content, but Markdown can still be useful for technical or documentation-focused pages.
This improves consistency and prevents content from becoming difficult to reuse across channels.
If Markdown is the main source of truth for your content, TinaCMS generally provides a cleaner workflow than adapting a block-based CMS for Markdown-heavy publishing.