Usage metering
Charging for what is used rather than what is granted. Usage ingest, enforcement and billing over the namespaced resource keys, plus time-tracked services. Measurement itself (bytes on the wire, disk consumed) belongs to the provider or the infrastructure; the console ingests reported usage. Storage becomes a metered resource alongside network egress.
Phases: usage ingest and threshold alerts per site and organization; limit enforcement (block or throttle over the limit, configurable grace periods); time-tracked and hourly service billing with add-on management; usage-based billing (metered subscriptions, pending charges swept into invoice items). Open: whether a metered resource can be scoped to an arbitrary subset of providers rather than one or all, which is its own issue.
