{"id":"azure-ha-tier-topology-dual-alignment","text":"Azure high availability design requires satisfying two independent decision axes simultaneously: tier selection determines which zone-redundancy options are available (Basic/Standard DTU excluded, Hyperscale zone-redundancy locked at creation time), while topology selection determines the SLA level (Availability Sets 99.95%, Availability Zones 99.99%, cross-region via ASR), creating a matrix where an incorrect tier choice can eliminate the desired topology option entirely.","truth_value":"IN","source":"","source_url":"","source_hash":"","justifications":[],"dependents":[],"metadata":{},"explanation":{"steps":[{"node":"azure-ha-tier-topology-dual-alignment","truth_value":"IN","reason":"premise"}]}}