the invisible plumbing that turns your card swipe into someone else's rent money.
means the chain of verification, authorization, and settlement that moves money from a buyer's account to a seller's, in seconds, disguised as instant magic.
from born from credit card networks in the 1950s-60s (diners club, then visa and mastercard), payment processing exploded with the internet when someone had to figure out how to verify a stranger's card number typed into a browser without either party going bankrupt.
stripe — processes payments for millions of internet businesses since 2010
visa network — handles over 65,000 transactions per second at peak
square — turned iphone dongles into a small-merchant payment revolution in 2009
swift system — routes trillions in cross-border bank transfers daily since 1973