GatsbyJS is a blazing fast site generator based on React. It comes with all the latest performance optimizations included out-of-the-box. In addition, GatsbyJS allows you to use any React component you could think of in the output. There are lots of existing add-ons that allow to query existing CMS solutions such as Wordpress, Drupal, and Plone.
I could give a quick introduction of Gatsby and show some real-world use cases.
Room: Room 3