Aggregation & Rollups — Compresses millions of raw events into the period totals billing actually needs — per account, per metric, per hour or month. It consumes mediated events and hands compact, auditable rollups to rating, dashboards, and alerts.
Aggregation & Rollups lives in the Consume & Meter phase of Fulfill & Bill — the stage where you activate what was sold, meter what's used, bill it right. In the corpus tool index this phase maps to the Meteringcategory.
The critical requirements that test this capability in UsagePricing's Usage-based billing & metering rubric — scored tool profiles link from the list below.
Can finance define a new meter without re-instrumenting the product?
The bar: Metrics defined declaratively (SQL or expression language) over raw events; new metrics rate historical data.