AWS provides customers the flexibility to place instances and store data
within multiple geographic regions as well as across multiple
Availability Zones within each region. Each Availability Zone is
designed as an independent failure zone. In case of failure, automated
processes move customer data traffic away from the affected area. AWS
SOC reports provides further details. ISO 27001 standard Annex A,
domain 15 provides additional details. AWS has been validated and
certified by an independent auditor to confirm alignment with ISO
27001 certification.