The Static Content Generator engine, Hugo, is what I use to convert the Markdown content of my site into HTML for serving to the public.
Using Hugo as a backend to generate content for a statically hosted frontend reduces the security risk of hosting a dynamically interactive site.
Markdown represents a highly portable and lightweight text formatting. I had converted all of my Wordpress posts to Markdown prior to migrating over to Jekyll and eventually to Hugo. The fact that many generators support Markdown means that my content remains portable regardless of the platform/engine I use.