Markdown, Gatsby. Source is in GitHub, GHA builds the HTML output, then schleps it over to an S3 bucket.<p>I inherited this setup. Works great from my end, but we've got an engineering team that set it up and owns the plumbing of everything. That's key, because many orgs have a "we set it up, now it runs forever and you deal with it" mentality. And Gatsby has a super steep learning curve. And I'm not a designer.<p>Previously used Jekyll and still use it (minimally) for my blog. Jekyll is okay but once you get past a couple hundred pages, performance gets exponentially worse. Had a site with a few thousand pages, and builds would take an hour or more. And that org had the aforementioned problem. A team designed it, then got laid off, and I'm trying to read a dummies book to figure out what size hammer to hit the thing with.<p>I've been in this for 25 years, so I've used about everything else. Flare, DITA, FrameMaker, RoboHelp, PageMaker. No typewriters, thankfully.