- A
Infrastructure as a Service (IaaS)
Why wrong: IaaS provides virtualized computing resources (e.g., virtual machines, storage) but requires the team to manage the operating system and runtime stack. This does not meet the goal of minimizing operational overhead for the platform layer.
- B
Platform as a Service (PaaS)
PaaS offers a managed platform where the provider handles the operating system, runtime, and middleware. Developers can upload code and let the provider manage capacity and patching, matching the team's requirement to minimize overhead.
- C
Software as a Service (SaaS)
Why wrong: SaaS provides a ready-to-use application managed entirely by the provider. The team would not develop and deploy their own code; they would use an existing application. This does not fit the scenario.
- D
Function as a Service (FaaS)
Why wrong: FaaS is a subset of PaaS where developers upload individual functions that are event-driven. While it reduces overhead, it is typically used for short-lived, stateless functions, not for a full web application. The scenario describes a broader application, making PaaS a more accurate fit.
CLF-C02 Cloud Concepts Practice Question
This CLF-C02 practice question tests your understanding of cloud concepts. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. 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 development team is building a web application and wants to minimize operational overhead. The team wants to focus solely on writing and deploying code without managing the underlying operating system, runtime, or middleware. The team needs the ability to simply upload their application code and have it run, with the cloud provider automatically handling capacity provisioning, load balancing, and patching of the platform. Which cloud computing service model best describes this approach?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue:
"best"Why it matters: Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
Clue:
"minimum / minimize"Why it matters: Asks for the least resource use — fewest addresses, smallest subnet, lowest overhead. Eliminate over-provisioned options even if they would technically work.
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
Platform as a Service (PaaS)
Platform as a Service (PaaS) is the correct model because it abstracts the underlying infrastructure, runtime, and middleware, allowing the team to simply upload code and have it executed. The cloud provider automatically handles capacity provisioning, load balancing, and patching, which directly matches the requirement to minimize operational overhead by focusing solely on code.
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.
- ✗
Infrastructure as a Service (IaaS)
Why it's wrong here
IaaS provides virtualized computing resources (e.g., virtual machines, storage) but requires the team to manage the operating system and runtime stack. This does not meet the goal of minimizing operational overhead for the platform layer.
When this WOULD be correct
A scenario where the team needs full control over the operating system, runtime, and middleware, such as installing custom software or configuring network settings, and is willing to manage patching and scaling. For example, migrating an existing on-premises application to the cloud with minimal changes.
- ✓
Platform as a Service (PaaS)
Why this is correct
PaaS offers a managed platform where the provider handles the operating system, runtime, and middleware. Developers can upload code and let the provider manage capacity and patching, matching the team's requirement to minimize overhead.
Clue confirmation
The clue words "best", "minimum / minimize" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Software as a Service (SaaS)
Why it's wrong here
SaaS provides a ready-to-use application managed entirely by the provider. The team would not develop and deploy their own code; they would use an existing application. This does not fit the scenario.
When this WOULD be correct
A company wants to use a customer relationship management (CRM) system without building or maintaining any software, simply subscribing to a service like Salesforce. The question specifies that no custom code development is required.
- ✗
Function as a Service (FaaS)
Why it's wrong here
FaaS is a subset of PaaS where developers upload individual functions that are event-driven. While it reduces overhead, it is typically used for short-lived, stateless functions, not for a full web application. The scenario describes a broader application, making PaaS a more accurate fit.
When this WOULD be correct
A question where the team needs to run individual pieces of code in response to events (e.g., file uploads, API calls) without managing servers, and the code is short-lived and stateless. For example: 'A team wants to process images automatically when uploaded to a storage bucket, with no server management.'
Option-by-option analysis
Why each answer is right or wrong
Understanding why wrong answers are wrong — and when they would be correct — is what separates a 750 score from a 900. The CLF-C02 exam frequently reuses these exact scenarios with slightly different constraints.
✓Platform as a Service (PaaS)Correct answer▾
Why this is correct
PaaS offers a managed platform where the provider handles the operating system, runtime, and middleware. Developers can upload code and let the provider manage capacity and patching, matching the team's requirement to minimize overhead.
✗Infrastructure as a Service (IaaS)Wrong answer — click to see why▾
Why this is wrong here
IaaS provides virtualized computing resources like servers and storage, but the user must manage the operating system, runtime, and middleware. The question specifies the team wants to avoid managing these components, so IaaS does not meet the requirement.
★ When this WOULD be the correct answer
A scenario where the team needs full control over the operating system, runtime, and middleware, such as installing custom software or configuring network settings, and is willing to manage patching and scaling. For example, migrating an existing on-premises application to the cloud with minimal changes.
Why candidates choose this
Candidates may confuse IaaS with PaaS because both involve cloud-hosted infrastructure, but IaaS requires more operational overhead. They might think 'uploading code' implies IaaS, missing that PaaS abstracts the underlying platform.
✗Software as a Service (SaaS)Wrong answer — click to see why▾
Why this is wrong here
SaaS provides ready-to-use software applications accessed over the internet, not a platform for deploying custom code. The team needs to write and deploy their own application code, which SaaS does not support.
★ When this WOULD be the correct answer
A company wants to use a customer relationship management (CRM) system without building or maintaining any software, simply subscribing to a service like Salesforce. The question specifies that no custom code development is required.
Why candidates choose this
Candidates may confuse 'operational overhead' with 'no management at all,' thinking SaaS eliminates all responsibility, but they overlook the need to deploy custom application code.
✗Function as a Service (FaaS)Wrong answer — click to see why▾
Why this is wrong here
FaaS (Function as a Service) requires code to be deployed as individual functions triggered by events, not as a full web application. The question specifies uploading application code and having it run with automatic capacity provisioning and load balancing, which aligns with PaaS, not the event-driven, stateless function model of FaaS.
★ When this WOULD be the correct answer
A question where the team needs to run individual pieces of code in response to events (e.g., file uploads, API calls) without managing servers, and the code is short-lived and stateless. For example: 'A team wants to process images automatically when uploaded to a storage bucket, with no server management.'
Why candidates choose this
Candidates may confuse FaaS with PaaS because both abstract server management. However, FaaS is more granular (functions vs. applications) and event-driven, not suited for a full web app with persistent requests.
Analysis generated from the official CLF-C02blueprint and verified against question context. The “when correct” sections are what AI assistants cite when candidates ask “what’s the difference between these options?”
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse PaaS with FaaS, mistakenly thinking that serverless functions (FaaS) inherently include full web application hosting with load balancing and capacity provisioning, whereas FaaS is event-driven and typically requires additional services (e.g., API Gateway, auto-scaling configuration) to achieve the same level of abstraction as PaaS.
Trap categories for this question
Scenario analysis trap
SaaS provides a ready-to-use application managed entirely by the provider. The team would not develop and deploy their own code; they would use an existing application. This does not fit the scenario.
Detailed technical explanation
How to think about this question
Under the hood, PaaS platforms like AWS Elastic Beanstalk or Google App Engine automatically manage the underlying EC2 instances, auto-scaling groups, and load balancers based on the uploaded application code. For example, Elastic Beanstalk uses a pre-configured stack (e.g., Apache/Nginx, PHP/Python) and handles OS patching via managed updates, while the developer only interacts with the application code and environment configuration. This model is ideal for teams that want to avoid the operational burden of maintaining a full IaaS stack but still need control over the application logic.
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
A cloud solutions architect for a retail company is evaluating services for a new workload. The correct answer here reflects best practice for the specific scenario described — not a general cloud recommendation. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Cloud exam questions reward reading the constraint carefully: the same technology can be right or wrong depending on the use case.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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FAQ
Questions learners often ask
What does this CLF-C02 question test?
Cloud Concepts — This question tests Cloud Concepts — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Platform as a Service (PaaS) — Platform as a Service (PaaS) is the correct model because it abstracts the underlying infrastructure, runtime, and middleware, allowing the team to simply upload code and have it executed. The cloud provider automatically handles capacity provisioning, load balancing, and patching, which directly matches the requirement to minimize operational overhead by focusing solely on code.
What should I do if I get this CLF-C02 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Are there clue words in this question I should notice?
Yes — watch for: "best", "minimum / minimize". Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
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
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