With @Netlify Redirects, you can proxy every URL you're not serving to somewhere else.
📚 https://docs.netlify.com/routing/redirects/?utm_source=twitter&utm_medium=css-proxy-pnh&utm_campaign=devex
Perfect for gradually migrating or adding JAMstack to your existing stack.
Watch me set this up in under 2 minutes for my own cheeky version of the @css home page.