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Explore modern observability techniques for understanding flow in event-driven systems through this 52-minute conference talk from NDC Oslo 2025. Learn how traditional approaches like logging create more noise than signal when observing flow across distributed components, and discover why methods like message interception have limited effectiveness in explaining system behavior. Master the implementation of modern observability techniques including telemetry modeling, Semantic Conventions for Messaging, and W3C Trace Context standards to gain clear visibility into distributed system flow. Understand how standardized naming conventions provide trusted signal data instead of noise, and see practical demonstrations of flow observation across different middleware transports including Azure Service Bus and Kafka. Follow along with live examples in both C# and JavaScript that showcase various approaches to system flow observation and their respective trade-offs, enabling you to answer critical questions like which component caused a flow error and why specific fault paths were taken.
