How does Scala support distributed observability correlation at global scale?

Observability correlation uses trace IDs, metrics aggregation, and log correlation pipelines.

At global scale, Scala systems integrate OpenTelemetry for tracing, Prometheus for metrics, and structured logging for correlation. Each request carries a trace ID propagated across services. Telemetry data is aggregated into observability platforms like Grafana or Datadog. This enables cross-region debugging and latency analysis.