The SDK provides `TracingRequestHandler` and `TracingRequestStreamHandler` interfaces that extend AWS' Lambda request handlers. When a Lambda function that is using an implementation of either tracing request handler is invoked, the handler will obtain the globally registered OpenTracing [Tracer](https://opentracing.io/docs/overview/tracers/) and create/start an OpenTracing [Span](https://opentracing.io/docs/overview/spans/) to capture timing information and `key:value` pairs ([Tags/Logs](https://opentracing.io/docs/overview/tags-logs-baggage/)) detailing the trace data.
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