[minor3rd]

We just build and test everything every time. Maybe it costs us more $$$ on CI, but it costs far less in developer time. That being said, I mostly work at startups and larger companies will certainly cross a threshold where this isn't feasible.

[user5994461]

>>> larger companies will certainly cross a threshold where this isn't feasible.

Nope. Worked at the largest US bank that happens to be mono repo. They had compute grids with thousands of cores running tests 24/7. It's not sizable compared to the costs of the developers writing and maintaining software.