System Design · sector

Banking & markets

Exchanges, banks and systems where a millisecond is money.

1 ready to open · 7 more on the way

Monzo's system design

A bank built from about three thousand small services on AWS, wired into Mastercard and Faster Payments through its own data centres: follow one tap from the terminal to the ledger to your phone, the zero-trust rules between services, the day six empty database servers broke payments, and a backup bank on another cloud.

Intermediate4 chapters · ~8 min

Coming next · 7 in the works

Knight Capital
TSB Bank
Robinhood
Coinbase
Nasdaq
Nubank
LMAX Exchange