Conference room TV shows rotating CloudWatch dashboard. Someone asks "shouldn't you understand service status glance at that screen?" Honest operator answers: "Theoretically yes, but even seeing something odd, don't know where to start." Dashboard existence ≠ dashboard meaning.
Today covers CloudWatch Dashboard widget structure, JSON body, cross-account/region Observability, Dashboard Variables. Simultaneously, based on Google SRE Golden Signals and Netflix's observability hierarchy, design dashboards where "seeing screen → understanding."
Observability originated control theory