Amazon Web Services has shut down its Shanghai AI research lab, joining other U.S. tech giants like Microsoft and IBM in scaling back China-based R&D amid rising geopolitical tensions. This move highlights a broader trend of American companies realloc...

Amazon Web Services is an unrivalled colossus of the internet age, providing the computational horsepower underpinning countless organizations from Netflix to BMW, Disney to GE, Tinder to the CIA. It earns tens of billions of dollars a year, and if you’ve...