# OpenTelemetry Concepts

> Key concepts in OpenTelemetry

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

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

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Section pages:

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