Published onJune 1, 2026Part 4 — Instrument Now, Collect Later: OpenTelemetry-Ready .NET with Only the BCLdotnetopentelemetrysignozobservabilitydiagnosticsActivitySource, Meter, and ILogger ship in the .NET runtime, not in OpenTelemetry. Instrument your app with them today at almost zero cost, read it back with built-in tooling, and bolt on a backend whenever you are ready.