{"id":"azure-ha-zone-redundancy-follows-tier-pattern","text":"Azure zone-redundant HA is an instance of the platform-wide progressive tier pattern: just as ACR gates enterprise features behind Premium and Redis gates clustering behind Premium, zone redundancy is gated behind higher tiers across SQL Database (excludes Basic/Standard DTU), Redis (excludes Basic), and Event Hubs (requires Premium/Dedicated) — tier selection determines not just feature access but also resilience ceiling.","truth_value":"IN","source":"","source_url":"","source_hash":"","justifications":[],"dependents":[],"metadata":{},"explanation":{"steps":[{"node":"azure-ha-zone-redundancy-follows-tier-pattern","truth_value":"IN","reason":"premise"}]}}