- A
All three models (IaaS, PaaS, SaaS) require the same amount of customer-owned hardware since cloud supplements rather than replaces on-premises systems
Why wrong: Cloud services are designed to replace on-premises hardware for the workloads they cover. IaaS VMs replace physical servers; SaaS applications eliminate the need for any on-premises servers for that workload.
- B
In all three models, the cloud provider owns and manages the physical hardware, eliminating the need for customer-owned servers for those workloads — with IaaS requiring the most customer management (VMs) and SaaS requiring the least (just use the application)
This is correct. In all three models, the provider owns the physical hardware — the customer buys no servers. The difference is how much software infrastructure the customer manages on top: IaaS → manage VMs; PaaS → manage application code; SaaS → just use the product. All three eliminate customer hardware ownership for covered workloads.
- C
Only SaaS eliminates the need for customer servers; IaaS and PaaS still require on-premises hardware for hybrid connectivity
Why wrong: IaaS and PaaS also eliminate the need for servers for the workloads they run — the provider's hardware hosts the VMs and platforms. Hybrid connectivity (if needed) uses existing networking infrastructure, not servers.
- D
The service model doesn't affect hardware ownership — hardware purchase decisions are independent of whether the company uses cloud services
Why wrong: Service model directly determines hardware ownership. Workloads moved to any cloud service model no longer need equivalent on-premises servers. This is one of the fundamental cost and operational differences between cloud and on-premises.
Quick Answer
The answer is that in all three cloud service models—IaaS, PaaS, and SaaS—the cloud provider owns and manages the physical hardware, so you do not need to buy fewer servers because you stop buying them entirely for those workloads. The key difference lies in how much of the underlying stack you manage: with IaaS, you still handle virtual machines and operating systems, meaning you manage the software layer on top of the provider’s hardware; with PaaS, the provider manages the runtime and middleware, so you only deploy code; and with SaaS, you simply use the application with no hardware or platform control. On the Google Cloud Digital Leader exam, this question tests your understanding that hardware ownership is eliminated across all models, but the level of customer management decreases as you move from IaaS to SaaS. A common trap is thinking IaaS still requires your own servers—it does not, only virtual ones. Memory tip: “I-P-S” stands for “I manage, Provider manages, Software only”—the hardware is always theirs.
Cloud Digital Leader Fundamental cloud concepts Practice Question
This GCDL practice question tests your understanding of fundamental cloud concepts. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A company's finance director asks: 'If we move to cloud, do we need to buy fewer servers?' An IT architect responds that the answer depends on whether the company is adopting IaaS, PaaS, or SaaS. How does the service model affect hardware ownership?
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
In all three models, the cloud provider owns and manages the physical hardware, eliminating the need for customer-owned servers for those workloads — with IaaS requiring the most customer management (VMs) and SaaS requiring the least (just use the application)
Option B is correct because in IaaS, PaaS, and SaaS, the cloud provider owns and manages the physical hardware in their data centers. The customer's hardware ownership decreases as the service model abstracts more layers: IaaS provides virtual machines (VMs) that the customer manages, PaaS provides a managed platform (runtime, middleware) without customer control over the underlying OS or hardware, and SaaS delivers a fully managed application where the customer only uses the software. Thus, moving to any of these models reduces or eliminates the need for customer-owned servers for those specific workloads.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
All three models (IaaS, PaaS, SaaS) require the same amount of customer-owned hardware since cloud supplements rather than replaces on-premises systems
- ✓
In all three models, the cloud provider owns and manages the physical hardware, eliminating the need for customer-owned servers for those workloads — with IaaS requiring the most customer management (VMs) and SaaS requiring the least (just use the application)
Why this is correct
This is correct. In all three models, the provider owns the physical hardware — the customer buys no servers. The difference is how much software infrastructure the customer manages on top: IaaS → manage VMs; PaaS → manage application code; SaaS → just use the product. All three eliminate customer hardware ownership for covered workloads.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Only SaaS eliminates the need for customer servers; IaaS and PaaS still require on-premises hardware for hybrid connectivity
- ✗
The service model doesn't affect hardware ownership — hardware purchase decisions are independent of whether the company uses cloud services
Why it's wrong here
Service model directly determines hardware ownership. Workloads moved to any cloud service model no longer need equivalent on-premises servers. This is one of the fundamental cost and operational differences between cloud and on-premises.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Cisco often tests the misconception that IaaS still requires on-premises servers for hybrid connectivity or that PaaS requires customer hardware, when in fact all three models shift physical hardware ownership to the cloud provider, and the difference lies in the level of customer management, not hardware ownership.
Detailed technical explanation
How to think about this question
Under the hood, the cloud service models correspond to different layers of the OSI model and the shared responsibility model: IaaS (e.g., AWS EC2) virtualizes compute, storage, and networking, leaving the customer to manage the guest OS and applications; PaaS (e.g., Google App Engine) abstracts the runtime and middleware, automatically scaling underlying hardware; SaaS (e.g., Microsoft 365) delivers a complete application with no customer access to the infrastructure. A real-world scenario is a company migrating a legacy database: using IaaS, they provision a VM and manage the DBMS; using PaaS (e.g., Azure SQL Database), they only manage data and schema; using SaaS (e.g., Salesforce), they just use the application. The subtle behavior is that even in IaaS, the customer never owns the physical server—only the virtualized instance—so hardware ownership is always with the provider.
KKey Concepts to Remember
- Read the scenario before looking for a memorised answer.
- Find the constraint that changes the correct option.
- Eliminate answers that are true in general but not in this case.
TExam Day Tips
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
An e-commerce site experiences heavy traffic on Black Friday and near-zero traffic during off-peak weeks. Rather than provisioning permanent large VMs, the team uses auto-scaling groups that add capacity automatically under load and reduce it overnight. Questions like this test whether you understand elasticity, availability zones, and cloud compute scaling patterns.
What to study next
Got this wrong? Here's your next step.
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FAQ
Questions learners often ask
What does this GCDL question test?
Fundamental cloud concepts — This question tests Fundamental cloud concepts — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: In all three models, the cloud provider owns and manages the physical hardware, eliminating the need for customer-owned servers for those workloads — with IaaS requiring the most customer management (VMs) and SaaS requiring the least (just use the application) — Option B is correct because in IaaS, PaaS, and SaaS, the cloud provider owns and manages the physical hardware in their data centers. The customer's hardware ownership decreases as the service model abstracts more layers: IaaS provides virtual machines (VMs) that the customer manages, PaaS provides a managed platform (runtime, middleware) without customer control over the underlying OS or hardware, and SaaS delivers a fully managed application where the customer only uses the software. Thus, moving to any of these models reduces or eliminates the need for customer-owned servers for those specific workloads.
What should I do if I get this GCDL question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 11, 2026
This GCDL practice question is part of Courseiva's free Google Cloud 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 GCDL exam.
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