I'm interested in understanding what marketers and editors/creators do when they need to update websites that don't have a classic editing platform like WordPress or Drupal. Do they learn how to use a Headless CMS, or maybe ask for full support from dev?
They could also learn how the website works, or how markdown works. Not everyone needs to be treated like toddlers. Colleagues can be surprisingly capable if you educate them.
If not using a CMS that compiles to static, teaching HTML classes works surprisingly well. We had a team of non-technical people become comfortable enough with Bootstrap classes to be productive in a reasonable time length. To actually get their edits, just have them either edit and commit directly on GitHub or Gitlab, or use a Git client with a nice enough GUI.
One of my projects is aimed at solving this problem: <a href="https://revamphq.com" rel="nofollow">https://revamphq.com</a><p>Using Revamp, you can continue building on top of your existing stack while also allowing non-developers to make changes and deploy them immediately.
Currently in beta.
Solutions such as <a href="https://www.contentful.com/" rel="nofollow">https://www.contentful.com/</a> are probably useful for that purpose