OpenTelemetry

OpenTelemetry is a vendor-neutral, open-source observability framework incubated by the Cloud Native Computing Foundation, formed in 2019 through the merger of OpenTracing and OpenCensus. It provides a unified standard for collecting telemetry data — traces, metrics, and logs — from distributed systems, with the explicit goal of eliminating the vendor lock-in that fragmented earlier observability stacks.

The core innovation of OpenTelemetry is its data model and protocol, not its tools. The OpenTelemetry Protocol (OTLP) defines a common wire format for telemetry data that can be exported to any backend: Prometheus for metrics, Grafana Tempo or Jaeger for traces, Grafana Loki or Elasticsearch for logs. This decoupling means that instrumentation can be written once and consumed everywhere, a radical departure from the earlier era in which each monitoring vendor — New Relic, Datadog, Dynatrace — required its own agent, SDK, and data format.

But standardization is not simplification. OpenTelemetry's specification is vast, its SDKs are incomplete across languages, and the gap between "instrumented" and "observable" remains wide. A system that exports OpenTelemetry data still needs a backend to store it, a query language to analyze it, and a culture of operational discipline to act on it. OpenTelemetry solves the plumbing problem; it does not solve the epistemic problem.