What standard is Foundry distributed tracing built on?
Why D is the answer
OpenTelemetry
Microsoft states it is built on OpenTelemetry standards.
In detail
- Foundry distributed tracing is built on OpenTelemetry.
- An open standard also avoids lock-in.
Use case
An illustrative scenario, not a real incident.
A team traces across its own code and Foundry with OpenTelemetry, so all spans join into one trace.
See it in different ways
flowchart LR A["App or agent"] --> B["OpenTelemetry traces"] B --> C["Application Insights"] A --> D["Evaluators"] D --> E["Quality and safety scores"]
sequenceDiagram participant A as Agent or app participant O as OpenTelemetry participant M as Application Insights A->>O: Spans for each step O->>M: Exports the trace M-->>A: Debug and monitor
flowchart LR S0["Your code"] --> S1["OpenTelemetry"] --> S2["Foundry spans"] --> S3["One trace"]
Key point: Foundry tracing is built on OpenTelemetry.
Why the other options are wrong
- A. A private trace format used only by the portal
- It uses an open standard, not a private format.
- B. SMTP
- SMTP is for email.
- C. A plain text log with no structure at all
- Traces are structured.