Explore the architectural design and engineering challenges of building a scalable, resilient cloud-native jackpot system for online casinos in this 17-minute conference talk from Devoxx Greece 2025. Speaker Alexandros Valarakos demonstrates how Kafka Streams and microservices architecture can process high-volume wager streams in real-time with 'exactly-once' semantics for accurate jackpot calculations. Learn how this solution addresses shared liquidity complexities across multiple on-premises environments, allowing operators to participate in pooled jackpots while maintaining operational independence. The presentation covers core architectural elements and illustrates how single events cascade through stream processing transformations to ensure fault tolerance and data consistency within a distributed framework.