This week I heard about an interesting model for internal collaboration.
The model works for teams that are similar but should be able to remain distinct.
You want the teams to ride the line between efficiency and adaptability.
Fork internal infrastructure and have it be "open source" between the different groups.
They can pick the best parts from others to copy, but they aren't forced to.
It's "inefficient" but if you force a single option unnaturally then you force them into coordination non stop then they get a thing that's one-size-fits-none.
Groups are different, so allow them to be different.