The next generations of zone, as they incubated in China’s Special Economic Zones or in Middle Eastern city-states essentially swallowed the whole of the city and rendered urbanism as service industry. China’s experiment with the market was so successful that it has generated its own global urban networks of zone trading centers. For Dubai, reawakened by oil for a new chapter in global trade, the zone is a fresh form of entrepôt not unlike those in ancient episodes. No longer in the shadow of the global city as financial center (New York, London, Tokyo, Sao Paulo) the zone has now quickly overtaken it, offering a wilder more hyperbolic form that mixes off-shore financial districts, logistics parks, manufacturing facilities, educational campuses or technology villages. The zone has become the world city and the glittering mimic of Dubai, Singapore and Hong Kong. Ranging from spaces of a few hectares to conurbations that are hundreds of square kilometers, the scores of zone variants—each a newly minted cocktail of urban aspiration.
http://extrastatecraft.net/Projects/Zone