How do you enable distributed tracing?

Short answer: Distributed tracing tracks requests across services and microservices. Application Insights supports W3C trace context. Example in ASP.NET Core: builder.Services.AddApplicationInsightsTelemetry(options => {

Example code

options.EnableDependencyTrackingTelemetryModule = true; });

Real-world example (ShopNest)

ShopNest on Azure typically uses App Service + SQL Database + Blob Storage + Application Insights for monitoring.

Say this in the interview

1. Define — one clear sentence (the short answer above).
2. Example — relate it to a project like ShopNest or your real work.
3. Trade-off — when you would not use it.