@Marcus_Noble_ @Netlify @benotist @eleven_ty Headless CMS often allow you to call a web hook automatically when content changes. Which can trigger a build and ingestion. For services that we don’t I often use @IFTTT or @zapier.
As an example:
https://www.hawksworx.com/blog/keeping-a-jamstack-site-feeling-fresh-with-recent-tweets/
(My SSG has changed, but the mechanics are the same)