Version 4 (V4) of the Amazon SDK for .NET has been released\$1

For information about breaking changes and migrating your applications, see the [migration topic](https://docs.amazonaws.cn/sdk-for-net/v4/developer-guide/net-dg-v4.html).

 [https://docs.amazonaws.cn/sdk-for-net/v4/developer-guide/net-dg-v4.html](https://docs.amazonaws.cn/sdk-for-net/v4/developer-guide/net-dg-v4.html)

# Telemetry providers


The SDK provides an implementation of [OpenTelemetry](https://opentelemetry.io/) as a telemetry provider, which is described in the [next section](observability-telemetry-providers-otel.md).

If you have specific telemetry requirements, already have a telemetry solution in mind, or need fine-grained control over how telemetry data is captured and processed, you can also implement your own telemetry provider.

Register your own implementation with the [TelemetryProvider](https://docs.amazonaws.cn/sdkfornet/v4/apidocs/items/Runtime/TTelemetryProvider.html) class. The following is a simple example of how to register your own `TracerProvider` and `MeterProvider`.

```
using Amazon;
using Amazon.Runtime.Telemetry;
using Amazon.Runtime.Telemetry.Metrics;
using Amazon.Runtime.Telemetry.Tracing;

public class CustomTracerProvider : TracerProvider
{
    // Implement custom tracing logic here
}
public class CustomMeterProvider : MeterProvider
{
    // Implement custom metrics logic here
}

// Register custom implementations
AWSConfigs.TelemetryProvider.RegisterTracerProvider(new CustomTracerProvider());
AWSConfigs.TelemetryProvider.RegisterMeterProvider(new CustomMeterProvider());
```

**Topics**
+ [OpenTelemetry](observability-telemetry-providers-otel.md)

# Configure the OpenTelemetry-based telemetry provider
OpenTelemetry

The Amazon SDK for .NET includes an implementation of an OpenTelemetry-based telemetry provider. For details about how to set this provider as the global telemetry provider, see [Configure a `TelemetryProvider`](observability.md#observability-conf-telemetry-provider). To use this telemetry provider, you need the following resources in your project:
+ The [OpenTelemetry.Instrumentation.AWS](https://www.nuget.org/packages/OpenTelemetry.Instrumentation.AWS) NuGet package.
+ A telemetry exporter such as OTLP or Console. For more information, see [Exporters](https://opentelemetry.io/docs/languages/net/exporters/) in the OpenTelemetry documentation.

The OpenTelemetry implementation included with the SDK can be configured to reduce the amount of tracing for HTTPS requests, credentials, and compression. To do so, set the `SuppressDownstreamInstrumentation` option to `true`, similar to the following:

```
Sdk.CreateTracerProviderBuilder()
    .ConfigureResource(e => e.AddService("DemoOtel"))
    .AddAWSInstrumentation(options => options.SuppressDownstreamInstrumentation = true)
    .AddConsoleExporter()
    .Build();
```

For additional information about this provider, see the blog post [Enhancing Observability in the Amazon SDK for .NET with OpenTelemetry](https://aws.amazon.com/blogs/developer/enhancing-observability-in-the-aws-sdk-for-net-with-opentelemetry/).