Business
Approving Interfaces Without Seeing Coupling Cost
Interface conversations often stay in three rooms that never meet. Engineers talk protocols. Architects talk patterns. Business leaders talk speed, cost, and risk. None of those conversations connect, so a budget gets approved without seeing that the choice will raise the cost of every future change.
Two parts of the product are coupled when a change in one forces a change in the other. The more parts that must change together, the higher that cost climbs. The report prints those dollars as domain coupling.