Cat Swetel, director of engineering at Nubank, shares how the fourth-largest financial institution in Brazil grew rapidly on AWS, from a small startup to a company with 90 million customers. Nubank uses more than 40 AWS services, including Amazon EC2, Amazon DynamoDB, Amazon S3, and more, to run an infrastructure that’s stable, scalable and highly cost efficient. When the Brazilian Central Bank proposed a major change in how people transfer money, Nubank quickly supported the new ‘Pix’ protocol, developing a transfer flow with 10 second latency in under 5 months. In one year, Pix transactions exceeding total debit and credit transactions, causing stress and instability across Nubank’s infrastructure. Using AWS, Nubank spearheaded a multi-team effort to increase stability while optimizing latency and costs, positioning itself to continue growing while saving its customers over $8billion in fees.
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