EmDash with some aggressive caching and SWR is effectively this, and we're getting closer to that every day. When the cost of maintaining the data part of the CMS is effectively free, you're basically working with a static site anyway.
I haven’t used Wordpress for a few years. But with WP Super Cache (1) we also always did pretty much that: On saving a post/page the static HTML would be written to a cache directory and be the default content served to visitors.
I haven’t used Wordpress for a few years. But with WP Super Cache (1) we also always did pretty much that: On saving a post/page the static HTML would be written to a cache directory and be the default content served to visitors.
[1] https://wordpress.org/plugins/wp-super-cache/