Application Insights distributed tracing links requests across multiple microservices. Which property enables correlation?
- A RequestId
- B CorrelationId
- C Operation_Id (W3C TraceContext: traceparent) (correct answer)
- D SessionId
Shortcut: Distributed tracing uses W3C TraceContext (traceparent header). Application Insights assigns Operation_Id to trace all telemetry items (requests, dependencies, exceptions) across services in a single operation.