What Is a Resource Attribute?

A resource attribute identifies the source of telemetry rather than any single operation, capturing facts like the service name, deployment version, region, or host. It is set once and applied to every span, metric, and log the source emits. This consistent labeling lets observability tools group and filter signals by their origin.

Why it matters

To compare versions or isolate one host, every signal must say where it came from. Resource attributes provide that stable identity across all three telemetry types.

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