Month: 2026-04 Overview: - Focused on delivering a feature to improve observability for experiments in distributed traces within DataDog dd-trace-go, with no reported major defects. Key features delivered: - Implemented Experiment Scope Inheritance for Tracing Spans: Child spans started with StartSpan now read the experiment scope from the APM baggage and set the trace scope to 'experiments'. This aligns Go behavior with the Python SDK and closes a gap where child spans did not automatically inherit experimental scope. Commit c9f53ad2275101c975c8b9aa6112c886aa712d68 documents this change. Major bugs fixed: - No major bugs fixed this month. Changes are supported by unit tests with near-100% coverage; linting and tests updated to support the new behavior. Overall impact and accomplishments: - Improved observability and experiment fidelity across spans, enabling more accurate measurement and analysis of experiments. - Strengthened cross-language consistency (Go vs Python) in experiment scope propagation, reducing surprises for users. - Maintained high code quality through comprehensive unit tests and lint checks. Technologies/skills demonstrated: - Go, APM baggage propagation, StartSpan behavior, unit testing, linting, and code-quality practices; alignment with cross-language observability patterns.

April 2025: Documentation-focused work for DataDog/documentation, primarily a bug fix to clarify RUM session sampling guidance across platform setup guides. Delivered clearer, accurate docs reflecting current functionality and improved cross-platform consistency.

January 2025: Delivered service-level error span processing for error tracking, enabling attribution across full traces regardless of span position. Updated documentation and removed outdated bubbling-up workarounds, improving reliability and developer efficiency.