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Explore a comprehensive conference talk detailing Itaú Bank's strategic migration of core banking authorization systems from mainframe to AWS infrastructure. Discover how one of Latin America's largest financial institutions, serving 70 million clients and processing 100 million daily transactions, successfully implemented a high-performance solution targeting 1,000 transactions per second per account with sub-100ms latency requirements. Learn advanced Amazon DynamoDB optimization strategies, including effective partitioning patterns and critical anti-patterns to avoid when handling mission-critical financial workloads. Examine practical approaches for managing concurrent transactions through exclusive threading models, implementing cell-based architecture with account sharding, and maintaining distributed consistency across high-volume operations. Gain insights into techniques for achieving 99.99% uptime while ensuring transaction accuracy and balance consistency throughout the migration process. Understand parallel system validation strategies that enable seamless migration execution without service disruption, and explore real-world solutions for maintaining operational excellence during large-scale mainframe modernization initiatives in the banking sector.
