I think it's A the client

A - https://www.crowdstrike.com/cybersecurity-101/cloud-security/shared-responsibility-model/

I vote A but does anyone know what OBA is?

Based on everything ive seen on AWS and AZURE, the cloud provider is responsible for the security of the database in an IaaS model. Im assuming that it being the Iaas model that the database is in the cloud and not on site. In that model the client is only responsible for IAM, customer data, platform/applications, client side data encryption/integrity/authentication, server side encryption, and network traffic protection. Maybe im misreading the question but this seems to be the correct option despite being in the minority.

In IaaS model, the Cloud provider manages only THREE things: The Physical Network The Physical Datacenter (Storage) The Physical Hosts (Compute/Server/VMs) The client manages their DB applications, Directory structure, Data, IAM, Devices.

It's a client. The cloud provider is responsible for the security of the infrastructure itself, including the physical data centers, network infrastructure, and the hypervisor. They provide a secure foundation for the customer. he client, or customer, is responsible for securing the data, applications, operating system, and configurations within the virtual machines (VMs) or instances running in the cloud. This includes securing the database, managing access controls, and implementing security measures within the VM.

The client is the company itself isn't?

Took an AWS exam, and even this certification lists that it is the client's job to securely configure their VPC. They handle physical security, client handles logical.

C. Cloud Provider In my Security+ Study Guide, the Shared Responsibility model for IaaS says: "In an IaaS environment, the customer takes over security responsibility for everything that isn't infrastructure --" Customer Responsibilities = Data, Application, and OS Vendor Responsibilities = Hardware & Datacenter "Cloud providers, by their nature, are always responsible for the security of both hardware & the physical datacenter environment. If the customer were handling either of these items, the solution would not fit the definition of cloud computing."

According to the shared responsibility model in an Infrastructure as a Service (IaaS) cloud environment, the Option A: Client is responsible for securing the company’s database

The cloud provide provides the infrastructure, but it’s up to the client to secure their stuff. The question is asking who is responsible for securing the clients database in the IaaS. That’s the clients job.

A. Cloud provider is responsible for securing its infrastructure and any managed elements of the environment. Cloud customer (client) is responsible for securing its workloads, applications, and data.

With an IaaS model, the vendor is responsible for security of the physical data centers and other hardware that power the infrastructure -- including VMs, disks and networks. Users must secure their own data, operating systems and software stacks that run their applications.

C. Cloud provider In the shared responsibility model for cloud computing, the responsibility for securing different components of the cloud environment is divided between the cloud provider and the cloud customer (client).

the cloud provider