Merger
OpenCensus + OpenTracing → OpenTelemetry (2019). Unified API + SDK + protocol (OTLP).
Advertisement
Auto-instrumentation
Java agent, Python auto-instrumentors. Zero code change for common frameworks (Spring, Django).
Advertisement
Collector
Standalone. Receives OTLP → processes (batch, filter, tail sample) → exports (Jaeger, Prometheus, Datadog).