Glossary term
What is OTel (OpenTelemetry)?
OTel stands for OpenTelemetry.
Open standard for producing logs, metrics and traces. Example: Instrument once, send data to any tool.
Learn it properly · System DesignLesson 46: Logs, Metrics & Traces: The Three Pillars“Checkout took 20 seconds and failed” — but checkout touches eleven components. How logs, metrics and traces each answer a different question, how to instrument with OpenTelemetry, and how linking them takes you from “something's wrong” to “here's why” in minutes.