Seven scenarios where latest-state is not enough — where the shape of state over time (sources, keys, phases, thresholds, and known-at boundaries) is the evidence you actually need.
Monitoring and incident management
Track alert, unhealthy, degraded, or missing-signal windows from multiple providers. Compare overlap, provider-only residuals, missed windows, lead/lag, and open incidents at a live horizon.
IoT and industrial telemetry
Record over-temperature, vibration, stale sensor, calibration, or safety-interlock windows. Segment by site, unit, operating mode, or maintenance period without collapsing the original active ranges.
Weather and numeric thresholds
Treat numeric values as window predicates: temperature above 23.5 °C, humidity inside a comfort band, wind gusts over a limit, or pressure changes sustained past a tolerance.
Payments and fraud
Compare risk flags, provider classifications, account states, or enrichment availability. Evaluate decision-point history without leaking future annotations into the analysis.
Logistics and shipment state
Compare carrier, warehouse, customer-facing, and internal pipeline windows for delayed, held, missing-scan, exception, or delivered states. Roll leaf histories up to shipment, route, or depot views.
Distributed systems
Collapse several member lanes into one cohort and compare against a primary lane. Useful for replication audits, quorum health, failover, leader elections, and cross-region state agreement.
Data pipelines
Treat pipeline stages as lanes. Compare when the upstream state was active against staging, enrichment, publication, and downstream observation windows.