This is a great write-up about the new Facebook.com and some of the challenges and choices during development. The one glaring omission, however, is the lack of Safari support. It's amazing to me a company as large as Facebook would launch such a huge change without supporting second most-used browser in the world.
May 08, 2020
Facebook.com launched in 2004 as a simple, server-rendered PHP website. Over time, we’ve added layer upon layer of new technology to deliver more interactive features.