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Difficulty: EasyCloud Architecture and Deployment Models

An enterprise deploys several virtual machines in a cloud environment. The organization's internal IT team is responsible for installing operating system security patches, configuring guest firewalls, and managing application software, while the cloud provider manages the underlying physical hardware and hypervisor infrastructure. Which cloud service model is being used?

  1. Infrastructure as a Service (IaaS)Answer
  2. B
    Platform as a Service (PaaS)
  3. C
    Software as a Service (SaaS)
  4. D
    Identity as a Service (IDaaS)

Answer

Infrastructure as a Service (IaaS)
Infrastructure as a Service (IaaS) provides customers with virtualized computing resources over the cloud. Under the shared responsibility model for IaaS, the cloud provider manages the physical data centers, hardware servers, storage, and hypervisors, whereas the client remains fully responsible for managing and securing the guest operating systems, network configurations, database instances, and installed applications.

Step-by-Step Solution

1
Analyze the customer's operational responsibilities described in the scenario
The customer manages operating system patching, guest firewall rules, and application installations.
Identifying the highest level of system access controlled by the client defines the boundary of the shared responsibility model.
2
Analyze the cloud service provider's responsibilities described in the scenario
The vendor maintains the physical servers, data center facilities, and hypervisors.
Determining what infrastructure components are outsourced helps classify the service model.
3
Map the responsibility allocation to standard cloud service models
Providing raw compute, storage, and networking hardware while leaving OS control to the consumer defines Infrastructure as a Service (IaaS).
IaaS provides bare virtualization resources where the client retains control from the guest OS upward.

Key Concept

Cloud Service Models and Shared Responsibility Boundaries
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Topics

Cloud Architecture and Deployment Models

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