Add Baggage as Default Propagator

content/en/tracing/trace_collection/library_config/cpp.md

@@ -134,15 +134,15 @@ When multiple values are given, the order of matching is based on the order of v
 
 `DD_TRACE_PROPAGATION_STYLE_INJECT`
 : **Since**: v0.1.6 <br>
-**Default**: `datadog,tracecontext` <br>
-**Accepted values**: `datadog`, `tracecontext`, `b3` <br>
+**Default**: `datadog,tracecontext,baggage` <br>
+**Accepted values**: `datadog`, `tracecontext`, `b3`, `baggage` <br>
 Comma separated list of propagation styles to use when injecting tracing context.
 When multiple values are given, the order of matching is based on the order of values.
 
 `DD_TRACE_PROPAGATION_STYLE_EXTRACT`
 : **Since**: v0.1.6 <br>
-**Default**: `datadog,tracecontext` <br>
-**Accepted values**: `datadog`, `tracecontext`, `b3` <br>
+**Default**: `datadog,tracecontext,baggage` <br>
+**Accepted values**: `datadog`, `tracecontext`, `b3`, `baggage`  <br>
 Comma separated list of propagation styles to use when extracting tracing context.
 When multiple values are given, the order of matching is based on the order of values.
 

content/en/tracing/trace_collection/library_config/dotnet-core.md

@@ -207,17 +207,17 @@ Note that UDS is only supported on .NET Core 3.1 and above.<br>
 For information about valid values and using the following configuration options, see [Trace Context Propagation][21].
 
 `DD_TRACE_PROPAGATION_STYLE_INJECT`
-: **Default**: `datadog,tracecontext`<br>
+: **Default**: `datadog,tracecontext,baggage`<br>
 A comma-separated list of header formats to include to propagate distributed traces between services.<br>
 Available since version `2.20.0`
 
 `DD_TRACE_PROPAGATION_STYLE_EXTRACT`
-: **Default**: `datadog,tracecontext`<br>
+: **Default**: `datadog,tracecontext,baggage`<br>
 A comma-separated list of header formats from which to attempt to extract distributed tracing propagation data. The first format found with complete and valid headers is used to define the trace to continue.<br>
 Available since version `2.20.0`
 
 `DD_TRACE_PROPAGATION_STYLE`
-: **Default**: `datadog,tracecontext`<br>
+: **Default**: `datadog,tracecontext,baggage`<br>
 A comma-separated list of header formats from which to attempt to inject and extract distributed tracing propagation data. The first format found with complete and valid headers is used to define the trace to continue. The more specific `DD_TRACE_PROPAGATION_STYLE_INJECT` and `DD_TRACE_PROPAGATION_STYLE_EXTRACT` configuration settings take priority when present.<br>
 Available since version `2.20.0`
 

content/en/tracing/trace_collection/library_config/dotnet-framework.md

@@ -224,17 +224,17 @@ Note that Unix Domain Sockets (UDS) are not supported on .NET Framework.<br>
 For information about valid values and using the following configuration options, see [Trace Context Propagation][21].
 
 `DD_TRACE_PROPAGATION_STYLE_INJECT`
-: **Default**: `datadog,tracecontext`<br>
+: **Default**: `datadog,tracecontext,baggage`<br>
 A comma-separated list of header formats to include to propagate distributed traces between services.<br>
 Available since version `2.20.0`
 
 `DD_TRACE_PROPAGATION_STYLE_EXTRACT`
-: **Default**: `datadog,tracecontext`<br>
+: **Default**: `datadog,tracecontext,baggage`<br>
 A comma-separated list of header formats from which to attempt to extract distributed tracing propagation data. The first format found with complete and valid headers is used to define the trace to continue.<br>
 Available since version `2.20.0`
 
 `DD_TRACE_PROPAGATION_STYLE`
-: **Default**: `datadog,tracecontext`<br>
+: **Default**: `datadog,tracecontext,baggage`<br>
 A comma-separated list of header formats from which to attempt to inject and extract distributed tracing propagation data. The first format found with complete and valid headers is used to define the trace to continue. The more specific `DD_TRACE_PROPAGATION_STYLE_INJECT` and `DD_TRACE_PROPAGATION_STYLE_EXTRACT` configuration settings take priority when present.<br>
 Available since version `2.20.0`
 

content/en/tracing/trace_collection/library_config/go.md

@@ -168,7 +168,7 @@ Added in version 1.26.0.
 ### Trace context propagation
 
 `DD_TRACE_PROPAGATION_STYLE`
-: **Default**: `datadog,tracecontext` <br>
+: **Default**: `datadog,tracecontext,baggage` <br>
 Configures trace header injection and extraction style. See [Propagating Go Trace Context][18] for more information.
 
 ## Configure APM environment name

content/en/tracing/trace_collection/library_config/nodejs.md

@@ -276,17 +276,17 @@ For information about valid values and using the following configuration options
 
 `DD_TRACE_PROPAGATION_STYLE_INJECT`
 : **Configuration**: `tracePropagationStyle.inject`<br>
-**Default**: `Datadog,tracecontext`<br>
+**Default**: `Datadog,tracecontext,baggage`<br>
 A comma-separated list of header formats to include to propagate distributed traces between services.
 
 `DD_TRACE_PROPAGATION_STYLE_EXTRACT`
 : **Configuration**: `tracePropagationStyle.extract`<br>
-**Default**: `Datadog,tracecontext`<br>
+**Default**: `Datadog,tracecontext,baggage`<br>
 A comma-separated list of header formats from which to attempt to extract distributed tracing propagation data. The first format found with complete and valid headers is used to define the trace to continue.
 
 `DD_TRACE_PROPAGATION_STYLE`
 : **Configuration**: `tracePropagationStyle`<br>
-**Default**: `Datadog,tracecontext`<br>
+**Default**: `Datadog,tracecontext,baggage`<br>
 A comma-separated list of header formats from which to attempt to inject and extract distributed tracing propagation data. The first format found with complete and valid headers is used to define the trace to continue. The more specific `DD_TRACE_PROPAGATION_STYLE_INJECT` and `DD_TRACE_PROPAGATION_STYLE_EXTRACT` configurations take priority when present.
 
 For more examples of how to work with the library see [API documentation][2].

content/en/tracing/trace_collection/library_config/php.md

@@ -482,23 +482,25 @@ Read [Trace Context Propagation][11] for information about configuring the PHP t
 
 `DD_TRACE_PROPAGATION_STYLE_INJECT`
 : **INI**: `datadog.trace.propagation_style_inject`<br>
-**Default**: `Datadog,tracecontext`<br>
+**Default**: `Datadog,tracecontext,baggage`<br>
 Propagation styles to use when injecting tracing headers. If using multiple styles, comma separate them. The supported styles are:
 
   - [tracecontext][10]
   - [b3multi][7]
   - [B3 single header][8]
   - Datadog
+  - [Baggage][22]
 
 `DD_TRACE_PROPAGATION_STYLE_EXTRACT`
 : **INI**: `datadog.trace.propagation_style_extract`<br>
-**Default**: `Datadog,tracecontext,b3multi,B3 single header`<br>
+**Default**: `Datadog,tracecontext,b3multi,B3 single header,baggage`<br>
 Propagation styles to use when extracting tracing headers. If using multiple styles, comma separate them. The supported styles are:
 
   - [tracecontext][10]
   - [b3multi][7]
   - [B3 single header][8]
   - Datadog
+  - [Baggage][22]
 
 ### Integrations
 
@@ -681,3 +683,4 @@ When the application runs in a docker container, the path `/proc/self` should al
 [19]: /tracing/trace_collection/compatibility/php/
 [20]: /opentelemetry/interoperability/environment_variable_support
 [21]: /tracing/trace_collection/library_config/#traces
+[22]: https://www.w3.org/TR/baggage/

content/en/tracing/trace_collection/library_config/python.md

@@ -108,11 +108,11 @@ Enable [connecting logs and trace injection][6].
 ## Trace context propagation
 
 `DD_TRACE_PROPAGATION_STYLE_INJECT`
-: **Default**: `tracecontext,Datadog`<br>
+: **Default**: `tracecontext,Datadog,baggage`<br>
 Propagation styles to use when injecting tracing headers. For example, use `DD_TRACE_PROPAGATION_STYLE_INJECT=Datadog,B3` to inject both Datadog and B3 format headers.
 
 `DD_TRACE_PROPAGATION_STYLE_EXTRACT`
-: **Default**: Value of `DD_TRACE_PROPAGATION_STYLE_INJECT` (`tracecontext,Datadog`)<br>
+: **Default**: Value of `DD_TRACE_PROPAGATION_STYLE_INJECT` (`tracecontext,Datadog,baggage`)<br>
 Propagation styles to use when extracting tracing headers. When multiple values are given, it uses the first header match found. The order of matching is based on the order of values given. For example, `DD_TRACE_PROPAGATION_STYLE_EXTRACT=B3,Datadog` looks for `B3` headers first, and only uses `Datadog` headers if those are not available.
 
 ## Further Reading

content/en/tracing/trace_collection/trace_context_propagation/_index.md

@@ -44,8 +44,8 @@ Use the following environment variables to configure formats for reading and wri
 
 `DD_TRACE_PROPAGATION_STYLE`
 : Specifies trace context propagation formats for extraction and injection in a comma-separated list. May be overridden by extract-specific or inject-specific configurations.<br>
-**Default**: `datadog,tracecontext` <br>
-**Note**: With multiple formats, extraction follows the specified order (for example, `datadog,tracecontext` checks Datadog headers first). The first valid context continues the trace; additional valid contexts become span links.
+**Default**: `datadog,tracecontext,baggage` <br>
+**Note**: With multiple trace context formats, extraction follows the specified order (for example, `datadog,tracecontext` checks Datadog headers first). The first valid context continues the trace; additional valid contexts become span links. When `baggage` is included, it is added as [baggage](#baggage) to the existing context.
 
 `OTEL_PROPAGATORS`
 : Specifies trace context propagation formats for both extraction and injection (comma-separated list). Lowest precedence; ignored if any other Datadog trace context propagation environment variable is set.<br>
@@ -122,6 +122,7 @@ The Datadog Python SDK supports the following trace context formats, including d
 |------------------------|---------------------------------|
 | [Datadog][1]           | `datadog`                       |
 | [W3C Trace Context][2] | `tracecontext`                  |
+| [Baggage][6]          | `baggage`                       |
 | [B3 Single][3]         | `b3`                            |
 |                        | `b3 single header` (deprecated) |
 | [B3 Multi][4]          | `b3multi`                       |
@@ -132,6 +133,7 @@ The Datadog Python SDK supports the following trace context formats, including d
 [3]: https://github.com/openzipkin/b3-propagation#single-header
 [4]: https://github.com/openzipkin/b3-propagation#multiple-headers
 [5]: #none-format
+[6]: https://www.w3.org/TR/baggage/
 
 {{% /tab %}}
 
@@ -145,6 +147,7 @@ The Datadog Ruby SDK supports the following trace context formats, including dep
 |------------------------|---------------------|
 | [Datadog][1]           | `datadog`           |
 | [W3C Trace Context][2] | `tracecontext`      |
+| [Baggage][6]          | `baggage`           |
 | [B3 Single][3]         | `b3`                |
 | [B3 Multi][4]          | `b3multi`           |
 | [None][5]              | `none`              |
@@ -168,6 +171,7 @@ end
 [3]: https://github.com/openzipkin/b3-propagation#single-header
 [4]: https://github.com/openzipkin/b3-propagation#multiple-headers
 [5]: #none-format
+[6]: https://www.w3.org/TR/baggage/
 
 {{% /tab %}}
 
@@ -181,6 +185,7 @@ The Datadog Go SDK supports the following trace context formats, including depre
 |------------------------|---------------------|
 | [Datadog][1]           | `datadog`           |
 | [W3C Trace Context][2] | `tracecontext`      |
+| [Baggage][6]          | `baggage`           |
 | [B3 Single][3]         | `B3 single header`  |
 | [B3 Multi][4]          | `b3multi`           |
 |                        | `b3` (deprecated)   |
@@ -191,6 +196,7 @@ The Datadog Go SDK supports the following trace context formats, including depre
 [3]: https://github.com/openzipkin/b3-propagation#single-header
 [4]: https://github.com/openzipkin/b3-propagation#multiple-headers
 [5]: #none-format
+[6]: https://www.w3.org/TR/baggage/
 
 {{% /tab %}}
 
@@ -204,6 +210,7 @@ The Datadog Node.js SDK supports the following trace context formats, including
 |------------------------|---------------------|
 | [Datadog][1]           | `datadog`           |
 | [W3C Trace Context][2] | `tracecontext`      |
+| [Baggage][6]          | `baggage`           |
 | [B3 Single][3]         | `B3 single header`  |
 | [B3 Multi][4]          | `b3multi`           |
 |                        | `B3` (deprecated)   |
@@ -214,6 +221,7 @@ The Datadog Node.js SDK supports the following trace context formats, including
 [3]: https://github.com/openzipkin/b3-propagation#single-header
 [4]: https://github.com/openzipkin/b3-propagation#multiple-headers
 [5]: #none-format
+[6]: https://www.w3.org/TR/baggage/
 
 {{% /tab %}}
 
@@ -227,6 +235,7 @@ The Datadog PHP SDK supports the following trace context formats, including depr
 |------------------------|---------------------|
 | [Datadog][1]           | `datadog`           |
 | [W3C Trace Context][2] | `tracecontext`      |
+| [Baggage][6]          | `baggage`           |
 | [B3 Single][3]         | `B3 single header`  |
 | [B3 Multi][4]          | `b3multi`           |
 |                        | `B3` (deprecated)   |
@@ -319,6 +328,7 @@ Creating this surrounding trace to your consuming-processing logic ensures obser
 [3]: https://github.com/openzipkin/b3-propagation#single-header
 [4]: https://github.com/openzipkin/b3-propagation#multiple-headers
 [5]: #none-format
+[6]: https://www.w3.org/TR/baggage/
 
 {{% /tab %}}
 
@@ -332,6 +342,7 @@ The Datadog C++ SDK supports the following trace context formats, including depr
 |------------------------|---------------------|
 | [Datadog][1]           | `datadog`           |
 | [W3C Trace Context][2] | `tracecontext`      |
+| [Baggage][6]          | `baggage`           |
 | [B3 Multi][4]          | `b3`                |
 |                        | `b3multi`           |
 | [None][5]              | `none`              |
@@ -467,6 +478,7 @@ void handle_http_request(const Request& request, dd::Tracer& tracer) {
 [3]: https://github.com/openzipkin/b3-propagation#single-header
 [4]: https://github.com/openzipkin/b3-propagation#multiple-headers
 [5]: #none-format
+[6]: https://www.w3.org/TR/baggage/
 
 {{% /tab %}}
 
@@ -480,6 +492,7 @@ The Datadog .NET SDK supports the following trace context formats, including dep
 |------------------------|-------------------------------|
 | [Datadog][1]           | `datadog`                     |
 | [W3C Trace Context][2] | `tracecontext`                |
+| [Baggage][9]          | `baggage`                     |
 |                        | `W3C` (deprecated)            |
 | [B3 Single][3]         | `B3 single header`            |
 |                        | `B3SingleHeader` (deprecated) |
@@ -595,7 +608,7 @@ void SetHeaderValues(MessageHeaders headers, string name, string value)
 [6]: https://github.com/DataDog/dd-trace-dotnet/releases/tag/v2.48.0
 [7]: https://github.com/DataDog/dd-trace-dotnet/releases/tag/v2.22.0
 [8]: https://github.com/DataDog/dd-trace-dotnet/releases/tag/v2.42.0
-
+[9]: https://www.w3.org/TR/baggage/
 
 {{% /tab %}}