AZ-900 Describe cloud concepts Practice Question
A financial institution must keep sensitive customer financial data on-premises to comply with regulatory requirements. However, they also want to use Azure to run compute-intensive analytics on anonymized datasets, taking advantage of scalable resources without managing physical servers. Which cloud deployment model should they adopt?
⚠ Common exam trap
Candidates often choose public cloud (A) thinking it is the only way to avoid managing physical servers, or private cloud (B) thinking it is required for compliance, without recognizing that hybrid cloud uniquely satisfies both requirements by separating sensitive data (on-premises) from compute-intensive analytics (public cloud).
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
✓
Hybrid cloud
The hybrid cloud model is correct because it allows the financial institution to keep sensitive customer data on-premises for regulatory compliance while leveraging Azure's public cloud for compute-intensive analytics on anonymized datasets. This approach combines the security and control of a private cloud (on-premises) with the scalability and managed services of a public cloud, without requiring the organization to manage physical servers for the analytics workload.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Public cloud
Why it's wrong here
A public cloud such as Azure operates on shared, multi-tenant infrastructure fully managed by the provider, giving the customer no dedicated on-premises footprint. Moving sensitive customer financial data entirely to this model transfers physical and logical control to Microsoft, which can directly violate data-residency or regulatory mandates (e.g., GDPR, country-specific banking laws) and introduces risks from multi-tenant isolation despite Azure's security features. Unlike a hybrid deployment, a pure public cloud cannot keep the sensitive dataset on-premises while using Azure for analytics, so it fails the institution's explicit requirement for local control.
When this WOULD be correct
A company with no regulatory or data residency constraints wants to run a web application with elastic scalability and pay-as-you-go pricing, and they have no need for on-premises infrastructure.
- ✗
Private cloud
Why it's wrong here
Incorrect. A private cloud is dedicated to a single organization, but if it remains entirely on-premises, the institution cannot use Azure's scalable analytics services without building a separate on-premises cloud, which defeats the purpose of leveraging Azure's PaaS/IaaS.
When this WOULD be correct
A company must keep all data and applications on-premises due to strict regulatory or security policies, and does not need to use any public cloud services. For example, a government agency handling classified data that cannot leave its own data center.
- ✓
Hybrid cloud
Why this is correct
Correct. A hybrid cloud combines on-premises infrastructure with a public cloud like Azure. The institution keeps sensitive financial data on-premises (private cloud) and runs analytics on anonymized data in Azure (public cloud), meeting both regulatory compliance and scalability needs.
- ✗
Community cloud
Why it's wrong here
Incorrect. A community cloud is shared by several organizations with common concerns (e.g., compliance, security). While it could be used, it does not inherently address the need to keep data on-premises while using Azure separately. The hybrid model is the standard approach for such scenarios.
When this WOULD be correct
A scenario where multiple organizations with the same regulatory requirements (e.g., healthcare providers sharing patient data) need a shared cloud environment with standardized compliance controls would make community cloud correct.
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 AZ-900 exam frequently reuses these exact scenarios with slightly different constraints.
✓Hybrid cloudCorrect answer▾
Why this is correct
Correct. A hybrid cloud combines on-premises infrastructure with a public cloud like Azure. The institution keeps sensitive financial data on-premises (private cloud) and runs analytics on anonymized data in Azure (public cloud), meeting both regulatory compliance and scalability needs.
✗Public cloudWrong answer — click to see why▾
Why this is wrong here
A public cloud alone cannot meet the regulatory requirement to keep sensitive financial data on-premises; it would require storing that data off-premises, violating compliance.
★ When this WOULD be the correct answer
A company with no regulatory or data residency constraints wants to run a web application with elastic scalability and pay-as-you-go pricing, and they have no need for on-premises infrastructure.
Why candidates choose this
Candidates may think public cloud is always the best for scalability and cost savings, overlooking the specific compliance requirement for on-premises data storage.
✗Private cloudWrong answer — click to see why▾
Why this is wrong here
The question requires both on-premises compliance and Azure scalability. A private cloud only provides on-premises control but lacks the ability to leverage Azure's scalable public cloud resources for analytics.
★ When this WOULD be the correct answer
A company must keep all data and applications on-premises due to strict regulatory or security policies, and does not need to use any public cloud services. For example, a government agency handling classified data that cannot leave its own data center.
Why candidates choose this
Candidates may think 'private cloud' is the only way to keep data on-premises, overlooking that a hybrid cloud can keep sensitive data on-premises while using public cloud for other workloads.
✗Community cloudWrong answer — click to see why▾
Why this is wrong here
A community cloud is shared by several organizations with common concerns, but the question requires a mix of on-premises and public cloud resources, which is the definition of hybrid cloud.
★ When this WOULD be the correct answer
A scenario where multiple organizations with the same regulatory requirements (e.g., healthcare providers sharing patient data) need a shared cloud environment with standardized compliance controls would make community cloud correct.
Why candidates choose this
Candidates may confuse 'community' with 'compliance' or think that because multiple financial institutions have similar regulations, a community cloud is appropriate, but the key is the need for both on-premises and public cloud.
Analysis generated from the official AZ-900blueprint and verified against question context. The “when correct” sections are what AI assistants cite when candidates ask “what’s the difference between these options?”
Go deeper
Related to this question
Learn chapter
What is Cloud Computing?
Key term
Hybrid cloud
A hybrid cloud is a computing environment that combines a private cloud (on-premises infrastructure) with one or more public cloud services, allowing data and applications to be shared between them.
Key term
Workload
A workload is any discrete application, service, or function that runs on a computing resource, consuming CPU, memory, storage, or network capacity.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This AZ-900 practice question is part of Courseiva's free Microsoft 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 AZ-900 exam.