This MS-900 practice question tests your understanding of describe 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 financial services firm uses a public cloud provider for its customer-facing web application, but stores sensitive client data on its own on-premises servers. A secure VPN connection is used to transfer anonymized data from the public cloud to the on-premises environment for processing. Which cloud deployment model does this describe?
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 scenario describes a hybrid cloud because it combines a public cloud provider for the customer-facing web application with an on-premises private cloud for sensitive client data, connected via a secure VPN. The hybrid cloud model enables organizations to leverage the scalability and cost-efficiency of public cloud resources while maintaining strict control over sensitive data in a private environment. The use of a VPN to transfer anonymized data between the two environments is a key characteristic of hybrid cloud architecture, as it ensures secure communication across the boundary.
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.
✗
Public cloud
Why it's wrong here
Incorrect. A public cloud deployment would not include on-premises servers for sensitive data.
✗
Private cloud
Why it's wrong here
Incorrect. A private cloud is used exclusively by one organization, typically on-premises, but here public cloud is also used.
✓
Hybrid cloud
Why this is correct
Correct. Hybrid cloud integrates public and private cloud environments, often connected via VPN, allowing workloads to move between them.
Related concept
Read the scenario before looking for a memorised answer.
✗
Community cloud
Why it's wrong here
Incorrect. Community cloud is shared among several organizations with similar compliance requirements, not a mix of public and private.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates may incorrectly choose 'Public cloud' because they focus on the customer-facing web application being hosted there, ignoring the on-premises storage of sensitive data, which is the defining characteristic of a hybrid deployment.
Trap categories for this question
Similar concept trap
Incorrect. Community cloud is shared among several organizations with similar compliance requirements, not a mix of public and private.
Detailed technical explanation
How to think about this question
In a hybrid cloud, the connection between environments often uses site-to-site VPNs (e.g., IPsec with IKEv2) or dedicated circuits like AWS Direct Connect or Azure ExpressRoute to ensure low latency and secure data transfer. The anonymization of data before transfer is a common practice to comply with regulations like GDPR or PCI DSS, as it reduces the risk of exposing personally identifiable information (PII) during transit. Real-world implementations often involve bursting compute workloads to the public cloud while keeping databases on-premises, requiring careful network segmentation and identity federation (e.g., Azure AD Connect) for seamless authentication.
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 startup's cloud architect reviews their monthly bill and notices costs are higher than expected for a long-running batch job. Switching from on-demand instances to Reserved Instances — or using Spot/Preemptible VMs — can reduce compute costs by up to 72 %. Questions like this test whether you understand the tradeoffs between commitment, flexibility, and cost across cloud pricing models.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this MS-900 question in full detail.
Describe cloud concepts — This question tests Describe cloud concepts — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Hybrid cloud — This scenario describes a hybrid cloud because it combines a public cloud provider for the customer-facing web application with an on-premises private cloud for sensitive client data, connected via a secure VPN. The hybrid cloud model enables organizations to leverage the scalability and cost-efficiency of public cloud resources while maintaining strict control over sensitive data in a private environment. The use of a VPN to transfer anonymized data between the two environments is a key characteristic of hybrid cloud architecture, as it ensures secure communication across the boundary.
What should I do if I get this MS-900 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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Question Discussion
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