This demonstrates how Open Telemetry is done with Serilog.

The logging application OTELSerilogDemo.Service does not have a direct reference to Serilog or any other library except Microsoft.Extensions.*, it uses Microsoft.Extensions.Logging for logging and System.Diagnostics.ActivitySource for creating Open Telemetry traces and spans.

Serilog ist just used as the sink (Console and Open Telemetry exporter) which is all set up in an external helper nuget package (OTELSerilogDemo.Common). This way we make sure that the code of our services (which are part of a framework) do not take a direct dependency on all of these 3rd party packages.

When this demo is run in the latest JetBrains Rider 2025.2 EAP with the Open Telemetry plugin, the structured logs show up directly in Rider: