CONCEPT
Architectural Innovation
The reconfiguration of <em>relationships</em> between a product's components, leaving the components themselves largely unchanged—a shift that destroys incumbent firms because their embedded knowledge filters out the architectural signal.
Architectural innovation is the category Rebecca Henderson and Kim Clark added to innovation theory in 1990. It distinguishes changes to how components relate from changes to the components themselves. A modular innovation replaces a component while preserving the architecture. A radical innovation replaces both. Architectural innovation—changing the arrangement while leaving the pieces familiar—is the assassin that established firms cannot see. The photolithographic alignment equipment industry provided Henderson's canonical evidence: firms with the deepest technical expertise reliably failed when the architecture shifted, not despite their knowledge but because of it. Their expertise encoded the old architecture so thoroughly that the new one was invisible.
In The You On AI Field Guide
The prevailing innovation framework before 1990 sorted change along a single axis: incremental versus radical. An incremental innovation improved what already existed—a faster engine, a sharper blade, a more efficient process. A radical innovation replaced the existing solution entirely—the automobile for the horse, the transistor for the vacuum tube. The framework was intuitive, widely adopted, and structurally incomplete. It
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