Observability Glossary

Telemetry Data

Telemetry data is all the data your application produced that can indicate is internal state. For example, it can include metrics like CPU and memory utilization, error rates, and response times, as well as logs and traces.

In practice, telemetry data is often collected and processed using specialized tools and libraries such as OpenTelemetry. This data can then be visualized on dashboards, analyzed for trends, and used to trigger alerts or monitored for Service Level Objectives.

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Observability

Observability is the ability to understand how your application is working and behaving in production through telemetry data (logs, metrics, traces, wide events, etc.). It enables you detect, diagnose and resolve issues in your app before they impact your users and become problems.