{"id":"s3-single-az-classes","text":"Only S3 One Zone-IA and S3 Express One Zone use a single Availability Zone; all other storage classes use three or more AZs.","truth_value":"IN","source":"entries/2026/03/08/s3-storage-classes.md","source_url":"","source_hash":"5d2d178d9e4476d5","justifications":[],"dependents":[],"metadata":{},"explanation":{"steps":[{"node":"s3-single-az-classes","truth_value":"IN","reason":"premise"}]}}