The article clearly stated that they can commit a cross-cutting changes (a change that can affects thousands of binaries downstream) within 15 minutes.
I haven't done any calculation on how long that kind of changes can be done with polyrepo setup.
If they can do that, their story can only be better for single isolated changes. It seems from outside, Uber's monorepo development experience vastly better than many small startups with variety of development methodology (no matter monorepo, polyrepo, or continuous deployment, or waterfall development, or GitFlow (a type of waterfall)).
I haven't done any calculation on how long that kind of changes can be done with polyrepo setup.
If they can do that, their story can only be better for single isolated changes. It seems from outside, Uber's monorepo development experience vastly better than many small startups with variety of development methodology (no matter monorepo, polyrepo, or continuous deployment, or waterfall development, or GitFlow (a type of waterfall)).