Dive into the world of cloud native observability with this conference talk from Open Source 101 2023. Explore key concepts and terms in observability, including telemetry, instrumentation, cardinality, and percentiles. Discover the openTelemetry project, an open-source initiative offering a variety of languages and opportunities for working with telemetry data in microservices and Kubernetes environments. Learn about the project's community structure, including Special Interest Groups (SIGs) and repositories, and understand how to become both an end-user and potential contributor. Gain insights into the components of openTelemetry, such as the Collector, OpenTelemetry protocol (OTLP), APIs, and SDKs. Walk away with a solid foundation in observability concepts, distributed tracing terminology, and the knowledge to take your first steps towards open-source contribution in the field of cloud native observability.