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Difficulty: MediumCloud Service Models (IaaS, PaaS, SaaS)

Match each organizational deployment requirement to the cloud service model that best fits the administrative management scope.

  • Configuring custom virtual networks, installing a specific Linux kernel version, and managing guest operating system security patches.Infrastructure as a Service (IaaS)
  • Uploading application source code into a managed execution framework while leaving database administration and web server OS maintenance to the cloud vendor.Platform as a Service (PaaS)
  • Subscribing to a fully managed web-based customer relationship management (CRM) suite where users interact solely through an application web UI.Software as a Service (SaaS)

Answer

Configuring guest operating system patches and virtual networking matches Infrastructure as a Service (IaaS). Uploading source code into a managed execution environment matches Platform as a Service (PaaS). Accessing a web-based CRM suite without managing backend platform infrastructure matches Software as a Service (SaaS).
The correct pairings align with the cloud shared responsibility model boundaries: configuring virtual machines and operating systems requires Infrastructure as a Service (IaaS); building application code on pre-configured developer platforms requires Platform as a Service (PaaS); consuming a fully vendor-hosted web application requires Software as a Service (SaaS).

Step-by-Step Solution

1
Analyze requirement 1 (kernel, guest OS patches, virtual networking).
Identified requirement as low-level OS and compute control, which corresponds to Infrastructure as a Service (IaaS).
IaaS provides raw virtual compute, storage, and networking layers where the customer installs and maintains the operating system.
2
Analyze requirement 2 (uploading source code into a runtime framework without OS maintenance).
Identified requirement as application-level deployment on vendor-managed infrastructure, corresponding to Platform as a Service (PaaS).
PaaS abstracts away OS and hardware management, offering pre-configured environments for software development.
3
Analyze requirement 3 (accessing a finished web-based CRM via a web browser).
Identified requirement as end-user software delivery, corresponding to Software as a Service (SaaS).
SaaS delivers fully managed end-user software applications over the internet requiring no infrastructure or platform administration.

Key Concept

Cloud Service Models and Shared Responsibility Boundaries (IaaS, PaaS, SaaS)
Estimated Time:1m 30s
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Topics

Cloud Service Models (IaaS, PaaS, SaaS)

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