AZ-900 Describe cloud concepts Practice Question
A company runs its production workloads on an on-premises data center to meet strict regulatory compliance requirements. However, the development and testing teams use Azure to quickly provision environments on demand for short-term projects. The teams need to occasionally transfer data between the on-premises environment and Azure. Which cloud deployment model does this setup represent?
⚠ Common exam trap
A common mix-up: candidates confuse 'hybrid cloud' with 'public cloud' because they see Azure usage, but the key differentiator is the simultaneous use of on-premises infrastructure for compliance.
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
This setup combines an on-premises data center (private cloud) with Azure (public cloud) to form a hybrid cloud. The hybrid cloud model allows workloads to remain on-premises for compliance while leveraging Azure's elasticity for dev/test, with data transfer bridging both environments.
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
Incorrect. A public cloud deployment uses third-party cloud provider resources that are shared with other tenants over the public internet. In this scenario, the company uses its own on-premises data center, so it is not purely public cloud.
When this WOULD be correct
A company runs all its workloads (including production) on Azure infrastructure, with no on-premises or private cloud components. The question would ask: 'Which cloud deployment model uses only third-party cloud provider resources?'
- ✗
Private cloud
Why it's wrong here
Incorrect. A private cloud is deployed entirely within an organization's own data center or a hosted private environment for exclusive use. Since this company also uses Azure (a public cloud) for development and testing, it is not purely private cloud.
When this WOULD be correct
A company runs all its workloads on dedicated servers in its own data center, with no connection to any public cloud provider. The question asks for the deployment model that ensures exclusive use by a single organization.
- ✓
Hybrid cloud
Why this is correct
Correct. Hybrid cloud combines a private cloud (on-premises) with a public cloud (Azure), allowing data and applications to be shared between them. This setup is appropriate when an organization needs to keep some resources on-premises for compliance while using the public cloud for other workloads.
- ✗
Community cloud
Why it's wrong here
Incorrect. Community cloud is a collaborative effort where infrastructure is shared among several organizations with common concerns (e.g., security, compliance). This scenario only involves one organization using its own on-premises environment and Azure, multiple organizations are not sharing the infrastructure.
When this WOULD be correct
A question where multiple organizations with the same regulatory requirements (e.g., healthcare providers) jointly use a shared cloud infrastructure managed by a third party, while still meeting compliance standards.
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. Hybrid cloud combines a private cloud (on-premises) with a public cloud (Azure), allowing data and applications to be shared between them. This setup is appropriate when an organization needs to keep some resources on-premises for compliance while using the public cloud for other workloads.
✗Public cloudWrong answer — click to see why▾
Why this is wrong here
The setup uses both on-premises and Azure, which is a hybrid cloud model, not solely public cloud. Public cloud would mean all workloads run in Azure, but here production remains on-premises.
★ When this WOULD be the correct answer
A company runs all its workloads (including production) on Azure infrastructure, with no on-premises or private cloud components. The question would ask: 'Which cloud deployment model uses only third-party cloud provider resources?'
Why candidates choose this
Candidates see Azure being used and assume it's a public cloud, overlooking the on-premises component that makes it hybrid.
✗Private cloudWrong answer — click to see why▾
Why this is wrong here
The scenario involves both on-premises infrastructure and Azure public cloud, which is a hybrid cloud model. A private cloud would mean all resources are dedicated to a single organization and not combined with a public cloud.
★ When this WOULD be the correct answer
A company runs all its workloads on dedicated servers in its own data center, with no connection to any public cloud provider. The question asks for the deployment model that ensures exclusive use by a single organization.
Why candidates choose this
Candidates may confuse 'private cloud' with on-premises infrastructure, thinking that because the company has its own data center, it is a private cloud, ignoring the use of Azure for dev/test.
✗Community cloudWrong answer — click to see why▾
Why this is wrong here
A community cloud is shared by several organizations with common concerns (e.g., compliance, security). This question describes a single company using both on-premises and Azure, not a multi-organization shared infrastructure.
★ When this WOULD be the correct answer
A question where multiple organizations with the same regulatory requirements (e.g., healthcare providers) jointly use a shared cloud infrastructure managed by a third party, while still meeting compliance standards.
Why candidates choose this
Candidates may confuse 'community' with 'hybrid' because both involve multiple environments, but community cloud specifically refers to a shared multi-tenant setup for organizations with similar needs, not a mix of 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
Public cloud
A public cloud is a computing model where third-party providers deliver IT resources like servers, storage, and applications over the internet to multiple customers on a pay-as-you-go basis.
Key term
Private cloud
A private cloud is a cloud computing environment that is used exclusively by a single organization, offering the benefits of cloud services — like scalability and self-service — but with dedicated infrastructure that is not shared with any other company.
About these practice questions
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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.