Summary
Highlights
Being a global city is about performing a differentiated function within a global network, making them strategic locations in worldwide value chains. Examples include Taipei and Shenzhen for high-tech electronics, Geneva and Nairobi for civil society, Dubai and Hong Kong for air transport, and Washington and Brussels for political networks. London, New York, Tokyo, and Paris are absolute leaders due to their complex, multi-dimensional networks, regulating vast financial flows, coordinating production processes, and acting as centers for diverse activities that shape the global economy.
The latter half of the 20th century witnessed major technological and economic shifts. Low-cost computing and telecommunication networks, alongside financial deregulation and trade liberalization, enabled the expansion of multinational corporations and the formation of integrated global supply chains, leading to a massive expansion of the global economy.
Globalization, the services economy, and information technology have driven a deep structural transformation, moving from an industrial model to a services and information economy based on global networks of exchange. Urban networks serve as the physical means of connectivity, overcoming physical borders and connecting ever-larger systems of roads, communications, power lines, logistics, and transport.
More resources now move through global networks than any national economy. People are flocking to cities, which act as crucial access points to these emerging global networks and the opportunities they provide. Technology infrastructure is evolving into urban networks that provide the physical connectivity for this global economy, mirroring how industrial technologies supported national economies.
The global economy has recently transitioned from agriculture and industry dominance to being primarily based on services and information. This transforms societies from being organized around physical processes within national territories to the delivery of services and processing of information, based on access and connectivity, with urban centers providing this crucial link.
Globalization and urbanization are creating a new geography based on functional connectivity rather than physical borders. Unlike the cultural and ideological construction of nation-states, these global networks are functional, facilitating horizontal exchanges driven by market logic and technology.
Infrastructure networks are held together by urban centers, which are dense concentrations of connectivity. These centers function as regional hubs, linking local territories to larger exchange networks, and macro-level nodes within the global city network, providing critical advanced services needed to operate the world economy efficiently.
Global cities are urban centers that integrate the entire network by providing essential services. A network of over 100 global cities serves as landing points for worldwide financial networks and hubs for logistics. These cities manage overlapping flows of ideas, knowledge, people, money, and goods, profoundly impacting global affairs. They identify with peer cities globally, gaining influence and competing within these networks.