March 2026 monthly summary focusing on key accomplishments for the open-telemetry/opentelemetry-collector-contrib repo. Delivered a critical bug fix to preserve the original per-span service name when spans are routed through a shared OTEL collector, improving tracing accuracy and reporting across OTEL, Datadog exporter, and Alloy flows. End-to-end fidelity ensured by: 1) preserving per-span attributes from span.Meta to span.Attributes; 2) correctly mapping span.Service to resource-level service.name via groupByService; 3) ensuring the Datadog exporter reads span attributes before resource attributes. The change required no new config flags and is backed by a targeted commit. This results in more reliable cross-tracer tracing, faster troubleshooting, and better business visibility.