OpenTelemetry Has a Free Observability Framework — Traces, Metrics, and Logs Without Vendor Lock-in

OpenTelemetry (OTel) is the industry-standard observability framework — instrument once, export to any backend.

What You Get for Free

• Traces — distributed tracing across services
• Metrics — counters, histograms, gauges
• Logs — structured logging with trace correlation
• Auto-instrumentation — zero-code instrumentation for popular frameworks
• SDKs — Java, Python, Go, JavaScript, .NET, Ruby, Rust, C++, PHP
• Collector — receive, process, export telemetry data
• Vendor-neutral — export to Jaeger, Prometheus, Grafana, Datadog, New Relic
• Context propagation — trace across HTTP, gRPC, messaging

Quick Start (Node.js)

npm install @opentelemetry/sdk-node @opentelemetry/auto-instrumentations-node

import { NodeSDK } from '@opentelemetry/sdk-node'
import { getNodeAutoInstrumentations } from '@opentelemetry/auto-instrumentations-node'

const sdk = new NodeSDK({
  instrumentations: [getNodeAutoInstrumentations()]
})
sdk.start()
// That's it. HTTP, Express, pg, Redis — all auto-traced.

Why Developers Switch from Datadog APM

Datadog charges per host and locks you into their format:

• No vendor lock-in — switch backends without re-instrumenting
• Free — OTel is open-source, backends like Jaeger/Grafana are too
• Industry standard — CNCF graduated project, adopted by all major vendors
• One SDK — traces + metrics + logs in one library

A startup paid $800/month for Datadog APM (5 services). After OTel + Grafana Tempo: same traces, same dashboards, $0/month — self-hosted on existing infrastructure.

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