This latest 100 Days of Gatsby writeup is going to be very short... The latest challenge prompt guides you through a few paths to try out serverless functions in your site.
Considering I chose to hook up the Netlify Forms service in 100 Days of Gatsby — Challenge 4 while I was creating the form, I'm deemed this challenge done.
My takeaway: Netlify Forms are great! Now let's get to 100 Days of Gatsby — Challenge 7.