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So how does this differ from open census, openmetrics, opentracing? It would be great if one open-something combined metrics and other observability tools in one spec/toolset like application insights does. Otherwise, developers waste a lot of time evaluating various open-whatevers, and having to use more than one.

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I think OpenCensus and OpenTracing are being combined into OpenTelemetry. I'm not sure about OpenMetrics.

That's correct. And OpenMetrics is a standardization effort on metrics (basically, standardize and improve Prometheus format).

It would be great if they could all come under common OpenMonitoring umbrella, as ApplicationInsights does it.

Not sure what OpenMonitoring is but OpenTelemetry = Tracing + Metrics + Logging. So we don't really need any more Open-X standards in the observability space IMO

You are right, acc. https://opentelemetry.io/about/

Logging support is incubating.

Yeah, we're trying to solve for this over at https://vector.dev. We intend to decouple the pipeline from the method. As demonstrated by OT, this stuff changes, and you shouldn't have to rip out your plumbing every time it does. We're aiming to support all data (logs, metrics, and traces) as well as popular standards.

How does it differ from ApplicationInsights in Azure?

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