For a SaaS company like yours, I would do a site that's static content served from a CDN (generated by something like jekyll and friends). Obviously a site deployed that way is largely fail-proof and fast, but there's another (and larger) benefit people don't often mention:
Having your site content live in the git repo instead of a database is amazing. In fact, this is the approach taken by most documentation sites these days. It makes it so much easier and faster to make changes, updates, and experiment. I use Netlify as a static host; they have features to make any commit, pull request, or branch into a hosted preview. It's an awesome way to work.
(For less technical editors, you can plug them into the process with something like NetlifyCMS, a clever open source project from the same folks that basically is a CMS interface running on git / github.)