Why do the systems work but the data between them still breaks?
You built the systems. They run. That part is finished — do not pretend otherwise just to stay humble about it. The trouble lives in between, where one system hands data to another. Nobody wrote down what that handoff promises: what format, what timing, who fixes it when it fails. So when it fails, everyone looks at everyone else. This is not a technical problem you can code your way out of alone. It is an agreement your team has not made. Sit down together and write it.
The parts are not the problem. The handoffs are. Each integration is a promise between two systems — about format, timing, who owns the data. You have not written that promise down. Stop patching pipes one leak at a time. Sit down together and name every agreement your systems depend on.
What changes unlock by starting
- A written list of every integration and who owns it.
- Fewer surprises when data breaks, because someone is already named to fix it.
- A shared habit of checking agreements before blaming each other.
- A clear view of where the real risk sits — not in the systems, but in the handoffs between them.