# OpenTelemetry Concepts

> Key concepts in OpenTelemetry

---

LLMS index: [llms.txt](/llms.txt)

---

This section covers data sources and key components of the OpenTelemetry
project, which can help you understand how OpenTelemetry works.

---

Section pages:

- [Observability primer](/ko/docs/concepts/observability-primer/): Core observability concepts.
- [Context propagation](/ko/docs/concepts/context-propagation/): Learn about the concept that enables Distributed Tracing.
- [Signals](/ko/docs/concepts/signals/): Learn about the categories of telemetry supported by OpenTelemetry
- [Instrumentation](/ko/docs/concepts/instrumentation/): How OpenTelemetry facilitates instrumentation
- [Components](/ko/docs/concepts/components/): The main components that make up OpenTelemetry
- [Semantic Conventions](/ko/docs/concepts/semantic-conventions/): Common names for different kinds of operations and data.
- [Resources](/ko/docs/concepts/resources/)
- [Instrumentation scope](/ko/docs/concepts/instrumentation-scope/)
- [Sampling](/ko/docs/concepts/sampling/): Learn about sampling and the different sampling options available in OpenTelemetry.
- [Distributions](/ko/docs/concepts/distributions/): A distribution, not to be confused with a fork, is a customized version of an OpenTelemetry component.
- [용어집](/ko/docs/concepts/glossary/): 오픈텔레메트리(OpenTelemetry)에서 사용되는 텔레메트리 관련 용어의 정의와 표기 규칙