CCSP Cloud Concepts, Architecture, and Design Practice Question
An organization needs to migrate a legacy application to the cloud. The application requires full control over the operating system, middleware, and runtime. The team wants to minimize management overhead while retaining OS-level access. Which cloud service model is most appropriate?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
IaaS
IaaS provides virtualized hardware with OS access; PaaS abstracts the OS.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
IaaS
Why this is correct
IaaS allows full OS control while the provider manages physical infrastructure.
- ✗
SaaS
Why it's wrong here
SaaS does not provide OS access.
- ✗
FaaS
Why it's wrong here
FaaS is serverless; no OS access.
- ✗
PaaS
Why it's wrong here
PaaS manages the OS and runtime, limiting control.
Quick reference
Cloud Service Model Comparison
| Model | You Manage | Provider Manages | Examples |
|---|---|---|---|
| IaaS | OS, runtime, apps, data | Hardware, hypervisor, networking | EC2, Azure VMs, GCP Compute Engine |
| PaaS | Apps and data | OS, runtime, middleware, hardware | Elastic Beanstalk, Azure App Service |
| SaaS | Data and settings only | Everything else | Microsoft 365, Salesforce, Workday |
| FaaS / Serverless | Function code only | Infra, scaling, runtime | Lambda, Azure Functions, Cloud Run |
| CaaS | Containers and apps | Kubernetes, OS, hardware | EKS, AKS, GKE |
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This CCSP practice question is part of Courseiva's free ISC2 certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the CCSP exam.