This MS-900 practice question tests your understanding of describe 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 needs to ensure that their cloud data and applications remain available even if an entire Azure region experiences an outage. They also want to minimize latency by hosting resources in multiple geographic locations. Which cloud concept addresses these requirements?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
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.
Why wrong: Scalability is the ability to handle increased load, not protection against region-wide outages or latency optimization across regions.
B
Geo-redundancy
Geo-redundancy replicates data across multiple geographic regions, providing disaster recovery and enabling users to access resources from a region closer to them for lower latency.
C
Measured service
Why wrong: Measured service relates to usage metering and billing, not availability or latency across regions.
D
Resource pooling
Why wrong: Resource pooling is about shared infrastructure across customers, not geographic resiliency.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Geo-redundancy
Geo-redundancy (Option B) is correct because it specifically addresses the requirement for data and application availability during an entire Azure region outage by replicating resources across multiple geographically separated regions, such as Azure paired regions (e.g., East US and West US). This also minimizes latency by allowing traffic to be routed to the nearest available region, leveraging Azure Traffic Manager or Azure Front Door for global load balancing.
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.
✗
Scalability
Why it's wrong here
Scalability is the ability to handle increased load, not protection against region-wide outages or latency optimization across regions.
✓
Geo-redundancy
Why this is correct
Geo-redundancy replicates data across multiple geographic regions, providing disaster recovery and enabling users to access resources from a region closer to them for lower latency.
Clue confirmation
The clue word "minimum / minimize" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
Measured service
Why it's wrong here
Measured service relates to usage metering and billing, not availability or latency across regions.
✗
Resource pooling
Why it's wrong here
Resource pooling is about shared infrastructure across customers, not geographic resiliency.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse geo-redundancy with high availability within a single region (e.g., Availability Zones) or mistakenly think scalability or resource pooling can provide region-level disaster recovery, but only geo-redundancy ensures data and app availability across entire regions.
Detailed technical explanation
How to think about this question
Azure geo-redundancy is implemented through Azure Storage Geo-Redundant Storage (GRS) or Read-Access Geo-Redundant Storage (RA-GRS), which synchronously replicates data to a primary region and asynchronously to a secondary paired region (e.g., North Europe and West Europe). In a real-world scenario, if a primary region fails, Azure Storage automatically fails over to the secondary region, ensuring data durability of 99.99999999999999% (16 nines) over a given year, while Azure Traffic Manager uses DNS-based routing to direct users to the nearest healthy endpoint, reducing latency.
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.
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: Geo-redundancy — Geo-redundancy (Option B) is correct because it specifically addresses the requirement for data and application availability during an entire Azure region outage by replicating resources across multiple geographically separated regions, such as Azure paired regions (e.g., East US and West US). This also minimizes latency by allowing traffic to be routed to the nearest available region, leveraging Azure Traffic Manager or Azure Front Door for global load balancing.
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.
Are there clue words in this question I should notice?
Yes — watch for: "minimum / minimize". Asks for the least resource use — fewest addresses, smallest subnet, lowest overhead. Eliminate over-provisioned options even if they would technically work.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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