Answer: Management of the guest operating systems

## Explanation In the AWS Shared Responsibility Model: **AWS is responsible for:** - Security **OF** the cloud - Infrastructure security (hardware, software, facilities) - Host operating systems and virtualization - Configuration of infrastructure devices - Software that powers Availability Zones **Customer is responsible for:** - Security **IN** the cloud - Management of guest operating systems - Application security - Customer data - Identity and access management - Network traffic protection - Server-side encryption Therefore, **management of the guest operating systems** is clearly the customer's responsibility, while AWS handles the underlying infrastructure, host systems, and Availability Zone management.

Author: Ritesh Yadav