Range Architecture (Line Architecture)

Range architecture (noun) — the deliberate structure a season is built to: its price tiers, its category families, the ladders inside them, and the proportions and distances between them. It is the shape, statable before the styles exist; the assortment is what fills that shape once they do.

Architecture is a set of rules rather than a set of products. It answers how many bands the range runs and how far apart they sit, which families have to be present in which band, where newness is required and where carryover is acceptable, and how much of the line each band is meant to carry. None of those questions needs a style attached to it, which is exactly what makes them answerable early.

Keeping the two apart is what makes a diagnosis durable. A missing style is a hole in the assortment and it closes as soon as someone develops one. A band no family reaches, or a ladder with nothing between its opening and its top, is a hole in the architecture — and it reopens every season until the structure itself changes, because each new season is populated against the same rules that left it empty. Regrouping a board by tier rather than by category is the standard way of surfacing the second kind.

“Line architecture” is the same thing in most North American usage; “range” and “line” track the same regional split that gives range review and line review. Neither term implies three tiers, despite good, better, best being the common shorthand — the count is a choice, and the only real requirement is that each tier does a job the rest of the line is not already doing.