Software is carried by people, not diagrams. When boundaries are vague, ownership is hidden, or knowledge lives in one person's head, delivery gets slower and risk gets personal.
The same shape for software and people
We build in small, self-reliant parts: services that own their data, can be understood in a reasonable amount of time, and can be replaced without convening a committee. Contracts between parts are made explicit, so teams can change one area without guessing what they just broke somewhere else.
Teams get the same treatment. We draw boundaries around things that change together and shape teams like the systems they own. Conway's Law only works against you when you pretend it isn't there.
Knowledge has to move
No hoarded context, and no single person whose vacation becomes an incident. Handovers, pairing and written decisions are part of delivery, not an afterthought.