[bobnamob]

Amazon uses "repo per service" and it is semi insane, but Brazil (the big ol' internal build system) and Coral (the internal service framework) make it "workable".

As someone who worked in the dev tooling org, getting teams to keep their deps up to date was a nightmare.

[bluGill]

Monorepo and multi repo both have their own need for teams to work on dev tooling when the project gets large.