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At QCon SF, Suudhan Rangarajan presented ‘Netflix Play API: Why We Built an Evolutionary Architecture’. Key takeaways from the talk included: services that have a single identity/responsibility are easier to maintain and upgrade; engineers should spend time identifying core decisions that need to be made when building a service, and determine whether these are ‘Type 1’ or ‘Type 2’ decisions which require thorough deliberation or rapid experimentation, respectively; and designing an ‘evolutionary architecture’, using tools like fitness functions, provides many benefits.

AWS has released a new whitepaper, Amazon Web Services’ Approach to Operational Resilience in the Financial Sector and Beyond, in which we discuss how AWS and customers build for resiliency on the AWS cloud. We’re constantly amazed at the applications our customers build using AWS services — including what our financial services customers have built, from credit risk simulations to mobile banking applications. Depending on their internal and regulatory requirements, financial services companies may need to meet specific resiliency objectives and withstand low-probability events that could otherwise disrupt their businesses.