Kingdoms prosper because their roads are trusted as much as their walls. A castle can stand for centuries and still preside over a dying realm. Towering walls may discourage invaders, magnificent keeps may inspire admiration, and disciplined soldiers may protect the capital, but none of those accomplishments guarantee prosperity. A thriving civilization depends upon something far less glamorous. Merchants must reach distant markets, royal couriers must carry news without delay, craftsmen must exchange ideas across provinces, and neighboring cities must cooperate toward common goals. Long before history remembers the greatness of a realm, it first remembers whether its roads could be depended upon. Software architecture follows the same principle. Well-designed…