Ex AWS. AWS had one zone specific products. If those were in the affected AZ that data is lost. AWS has multiple multi-AZ products. S3 and EFS are good examp

Ex AWS. AWS had one zone specific products. If those were in the affected AZ that data is lost. AWS has multiple multi-AZ products. S3 and EFS are good examples. If you loose an AZ for an extended periodic of time, the dataplane of those services will migrate shards around until you get back to your durability goals.