Build Hooks
When developing your Gatsby website workflow, you need to come up with a way to deploy your content changes from your Drupal website. You could manually rebuild the site each time, but that defeats the purpose of having a CMS.
Enter the Drupal Build Hooks Module. This module can be used to automatically trigger your Gatsby site to rebuild when your content changes. There are a ton of configuration options. To see it in action, watch the YouTube video below: