Traces, metrics and logs answer different investigation questions. Context propagation and the Collector connect those signals from application to responder.
A backup cleanup can pass its tests while an older data format remains unverified. A risk registry preserves that distinction for the next engineering decision.
A rollback exception tests whether Opus 4.6 preserves decisive evidence across a long session, and whether the resulting answer arrives in time to help.
A rollback proposal crosses from recorded evidence into a changing system. The handoff carries source references, current preconditions and unfinished actions.
Grouping can shorten the incident queue while hiding a second failure. Following a replay past the first mitigation reveals whether that failure stays visible.
An error-budget hold needs a route for an urgent repair. Fresh measurements, artifact-specific exceptions and recovery criteria determine how that route works.
A reusable prompt connects observations, competing explanations and the next read-only check, so an incomplete record can still support useful investigation.
An upload report becomes investigable through its operation, region and time window. That same detail connects the engineering result back to the customer.
Runbook comparisons, timelines and draft updates provide checkable inputs for assistance. Incident closure also needs evidence about service recovery and unfinished work.