Distributed Tracing - W3C Trace Context Policy
Add a policy that implements the W3C Trace Context specification. This means that if a request that arrives at APIM without a w3c trace context, APIM will create it and send it to the backend. If a request arrives with a w3c trace context already created, APIM will append its information to the context.
francesco Damico commented
Hi, with the current the implementation in APIM with W3C settings set. It is not possible to trace a send-request in the inbound policy if the caller dose not sent a traceparent. See https://stackoverflow.com/questions/63868924/how-to-get-set-traceparent-header-in-apim-inbound-policy-if-client-dose-not-sent.