Spurred by technological advances in shipping and communications and aided by a liberal world-trading environment, deepening global supply chains (GSCs) have for four decades lowered costs and increased the variety of goods available to consumers around the world.
GSCs are complex networks of manufacturers, suppliers, warehouses, distributors, and shippers who move products and services from one location to another. Supporting these activities are orchestrated flows of blueprints, technology, people, and data across multiple countries and organizations. According to the World Trade Organization (2019), prior to the COVID-19 pandemic, more than two-thirds of world trade occurred through supply chains in which production crossed at least one border, and typically many borders, before final assembly.
Since the onset of the COVID-19 pandemic, however, supply chains once seen as exemplars of economic efficiency are increasingly portrayed as unacceptable sources of collective risk. Concerns about their resilience deepened as a series of external shocks continued to disrupt trade in the pandemic’s wake. Fragmentation has made GSCs long and thus subject to shocks emanating anywhere along the chain, while geographic concentration has made them heavily dependent on certain locations (and thus to shocks hitting specific parts of the world).
In contrast to idiosyncratic shocks like the 2011 Tōhoku earthquake and tsunami, headline supply shocks since 2020 have been global and cross-sectional—hitting many countries and industries simultaneously. Adding to concerns about exogenous shocks, the weaponization of trade by China and Russia has raised the geopolitical risks of overdependence on unfriendly countries. In concert, public demands have grown louder for both government and private-sector actions to reduce supply vulnerabilities.