Google has a few departements that do their own thing. Android and Chrome for example. There is still a lot one the monolithic repo. I heared "1TB" when I aske

Google has a few departements that do their own thing. Android and Chrome for example. There is still a lot one the monolithic repo. I heared "1TB" when I asked a Googler. Also, they don't use Perforce anymore, at least for the central repo, because Perforce requires a single host. They built a distributed monolithic repo server themselves. (disclaimer: I have no proof for any of this and might misremember)