https://medium.com/airbnb-engineering/recent-web-performance-fixes-on-airbnb-listing-pages-6cd8d93df6f4

We have been hard at work migrating the airbnb.com core booking flow into a single-page server-rendered app using React Router and Hypernova. At the beginning of the year, we rolled this out for the landing page and search results with good success. Our next step is to expand the single-page app to include the listing detail page.

This is the page you visit when deciding which listing to book. Throughout your search, you might visit this page many times to view different listings. This is one of the most visited and most important pages on airbnb.com, so it is critical that we nail all of the details!