Comment by jerf

"Why do you even need _different teams_ for the homepage ?"

Conway's Law: https://en.wikipedia.org/wiki/Conway%27s_law

Conway's law is expressed as "communication structure -> program structure" but it's actually even stronger than that; the arrow is bidirectional. If either the organization wants to break up the homepage into different teams, or if the organization has to have multiple teams work on their homepage for whatever reason, the homepage will reflect the organizational structure. YouTube falls into the second branch, which is that their home page is so complicated it has to be broken up between teams due to sheer organizational size. At YouTube's size you'll even have organizational distinctions you can't even see on the homepage like dedicated reliability engineering teams. At their scale I see at least six teams most likely, the "normal" video team, the shorts team, the sidebar menu, the hamburger menu, the search team, and the team responsible for the top-level all-Google interaction, plus multiple invisible ones like recommendation algorithm, reliability, possibly a dedicated performance team, etc.

You can, organizationally, try to put these all under one manager, but even when you do that it is a surprisingly uphill battle to maintain coherence, even when it is a goal, which it often isn't particularly. There's a lot of reasons few companies have the visual and design coherence of a ~2010 Apple, including arguably even 2025 Apple.