Explore the evolution and practical implementation of OpenTelemetry in this 47-minute conference talk from GOTO Amsterdam 2024. Learn about the origins of this CNCF project, second only to Kubernetes in popularity, and understand its core components from protocol to SDKs. Discover how to implement the three main signals - Logs, Metrics, and Tracing - while gaining insights into service propagation for both synchronous and asynchronous systems. Gain practical knowledge about sampling strategies, propagation mechanisms, and the concept of baggage in OpenTelemetry. Master the terminology and understand when and how to leverage OpenTelemetry effectively in your development projects. Through detailed examples and comprehensive explanations, grasp the fundamental value proposition of OpenTelemetry and its role in modern observability practices.