Functionally, Facebook's redesign means placing Groups near the center of a freshly tabbed interface for both Facebook’s website and app, and putting suggestions for new ones to join across the service. Groups will be flanked by Marketplace, perhaps the Facebook feature with the most latent potential. It’s a rapidly emerging use case Facebook wants to fuel.

If Groups is what’s already working about Facebook’s future, Watch is the opposite. It’s a product designed to capture the video viewing bonanza Facebook observes on Netflix and YouTube. But without tentpole content like a “Game of Thrones” or “Stranger Things,” it’s failed to impact the cultural zeitgeist.