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Explore proven architectural strategies for scaling systems from thousands to hundreds of millions of users through this 50-minute conference talk from AWS re:Invent 2025. Discover how Skyscanner transformed their infrastructure from traditional data centers to a global cloud architecture capable of serving 200 million users. Learn strategic decision-making frameworks for determining when to scale up versus scale out, implementing effective caching strategies, and evolving monolithic applications into scalable service architectures. Examine Skyscanner's real-world implementation of cellular architecture on Amazon EKS and understand the key architectural patterns that maintain performance and reliability during hypergrowth phases. Gain insights into critical scaling decision points, infrastructure evolution strategies, and practical approaches for building systems that can handle massive user growth while preserving system stability and performance.
