CCSP Cloud Concepts, Architecture, and Design Practice Question
Which cloud service model provides the customer with the most control over the underlying infrastructure, including operating systems and applications?
⚠ Common exam trap
The trap is assuming 'most control' means 'most secure' or 'most managed' — the exam tests whether you know IaaS sits at the top of the customer-control spectrum, not the provider-responsibility spectrum.
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 gives the customer control over the operating system, middleware, runtime, and applications while the provider manages the physical host, hypervisor, and networking fabric. This is the highest level of customer control among the four models listed. PaaS, SaaS, and FaaS progressively abstract away more of the stack, reducing customer control.
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 delivers compute, storage and networking while the customer manages operating systems, middleware and applications. That leaves the customer controlling more of the stack than PaaS or SaaS permit, satisfying the stem's requirement for the greatest infrastructure control.
- ✗
PaaS
Why it's wrong here
PaaS abstracts the underlying infrastructure, offering runtimes and middleware while the provider manages servers, storage and operating systems, so the customer cannot control the OS. It tempts because developers still deploy applications, but it would be correct only when the question asks which model most reduces infrastructure management burden.
- ✗
SaaS
Why it's wrong here
SaaS delivers complete provider-managed applications; the customer controls only configuration and data, never operating systems or infrastructure. It tempts because it demands the least customer administration, but it would be correct only if the question asked which model offers the least control over the underlying infrastructure.
- ✗
FaaS
Why it's wrong here
FaaS runs individual event-triggered functions on provider-managed infrastructure, giving no operating system or server access. It tempts because it maximises operational abstraction, but it would be correct only when the question asks which model requires the least infrastructure management from the customer.
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 |
Go deeper
Related to this question
About these practice questions
This CCSP question is part of Courseiva's 934-question bank — original exam-style content with full explanations and wrong-answer analysis, never real exam questions or exam dumps. Learn why practice questions differ from exam dumps →
JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed September 2026 · checked against the official ISC2 exam blueprint
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.