Paul Phillips is the CTO of CurrencyFair, which has exchanged over 3 billion euros for customers across 300 corridors over 6 years. In his talk, he discusses how CurrencyFair addressed challenges of scaling its architecture commercially across growing teams and regions by following AWS reference architectures using automatable and replicable units across multiple availability zones and regions, allowing them to deploy to two regions across five availability zones in nine days with over 99.99% uptime and the ability to process over 1 billion euros.