04/09/2026
Design, then engineering is the most expensive way to arrange the sequence.
A prototype approved by everyone in the room can still rest on an integration nobody has tested, a data model that does not exist yet or a third-party service whose rate limit breaks the intended flow.
None of that is a design failure. It is what a design review is not looking at, which is why the question surfaces during development as rework instead of during design as a decision. Our article covers what changes when the engineer is in the room from week one. Link in comments.