The   Distributed Tracing Working Group   invites implementations of the Candidate Recommendation Snapshot of   Propagation format for distributed context: Baggage . This specification defines a standard for representing and propagating a set of application-defined properties associated with a distributed request or workflow execution. This is independent of the  Trace Context  specification. Baggage can be used regardless of whether Distributed Tracing is used. This specification standardizes representation and propagation of application-defined properties. In contrast, Trace Context specification standardizes representation and propagation of the metadata needed to enable Distributed Tracing scenarios. The current version of the Baggage specification is targeted for implementations by applications and services, including web applications running within a browser. Web Browsers or User Agents are not currently in scope as a target implementation.

  The   Distributed Tracing Working Group   invites implementations of the   Trace Context Level 2   Candidate Recommendation Snapshot. This specification defines standard HTTP headers and a value format to propagate context information that enables distributed tracing scenarios. The specification standardizes how context information is sent and modified between services. Context information uniquely identifies individual requests in a distributed system and also defines a means to add and propagate provider-specific context information.

  29 September 2022 The  Distributed Tracing Working Group  has published a First Public Working Draft of  Trace Context Level 2 . This specification defines standard HTTP headers and a value format to propagate context information that enables distributed tracing scenarios. The specification standardizes how context information is sent and modified between services. Context information uniquely identifies individual requests in a distributed system and also defines a means to add and propagate provider-specific context information.