AZ-900 Describe cloud concepts Practice Question
A company wants to replicate its on-premises production environment to Azure for disaster recovery purposes. In the event of an on-premises outage, they can quickly start the replicated environment in Azure. Which cloud benefit does this best describe?
⚠ Common exam trap
Many candidates confuse high availability (which keeps services running despite local failures) with business continuity/disaster recovery (which recovers the entire environment after a major outage), often selecting 'High availability' because they think of 'keeping things running' rather than 'recovering from a disaster.'
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
✓
Business continuity
This scenario describes business continuity (C), which ensures that an organization can continue operations during and after a disaster. By replicating the on-premises environment to Azure and enabling rapid startup in the event of an outage, the company is implementing a disaster recovery (DR) strategy—a core component of business continuity. Azure Site Recovery (ASR) is the specific service that orchestrates replication, failover, and failback to meet recovery time objectives (RTO) and recovery point objectives (RPO).
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 increase system capacity by adding resources—either scaling up to larger VMs or scaling out with more instances—to accommodate long-term growth in workload. It is concerned with performance and capacity planning, not with protecting the environment against site-level failure. Replicating to Azure is about having a recovery target ready, which is a business-continuity concern rather than a capacity-expansion technique.
When this WOULD be correct
A question that asks: 'A company expects a sudden spike in user traffic and needs to automatically add virtual machines to handle the load. Which cloud benefit does this describe?' would make scalability the correct answer.
- ✗
High availability
Why it's wrong here
High availability, in Azure terms, is primarily about using availability sets, availability zones, and load balancers to keep applications running through infrastructure component failures inside the same datacenter or region. It does not involve replicating an entire on-premises environment to a separate cloud site; that is a cross-site disaster-recovery action. HA is meant to minimize downtime for expected, localized faults, not to survive a regional-scale outage.
When this WOULD be correct
A question describing an application deployed across multiple Azure availability zones to withstand datacenter failures without downtime would make high availability the correct answer.
- ✓
Business continuity
Why this is correct
Replicating an on-premises production environment to Azure is an explicit disaster-recovery measure: it creates a geographically separate copy that can be failed over to if the primary site is destroyed or unavailable. Azure Site Recovery and paired regions support this strategy, enabling defined recovery point objectives (RPO) and recovery time objectives (RTO). This is exactly what business continuity means—sustaining critical operations during and after a disruptive event.
- ✗
Elasticity
Why it's wrong here
Elasticity is a cloud characteristic where computing resources automatically scale out or in as demand changes, such as bursting additional VM instances during peak traffic or reducing them afterward. It handles variable workload volume, not data protection or re-creation of workloads elsewhere. Since the question is about copying the entire production environment to Azure for failover, elasticity has no bearing on that recovery goal.
When this WOULD be correct
A company expects sudden spikes in traffic and wants its cloud resources to automatically adjust to handle the load without manual intervention. In that context, elasticity would be the correct answer.
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.
✓Business continuityCorrect answer▾
Why this is correct
Replicating an on-premises production environment to Azure is an explicit disaster-recovery measure: it creates a geographically separate copy that can be failed over to if the primary site is destroyed or unavailable. Azure Site Recovery and paired regions support this strategy, enabling defined recovery point objectives (RPO) and recovery time objectives (RTO). This is exactly what business continuity means—sustaining critical operations during and after a disruptive event.
✗ScalabilityWrong answer — click to see why▾
Why this is wrong here
Scalability refers to the ability to increase or decrease resources as demand changes, not to replicating an environment for disaster recovery. The scenario focuses on having a standby environment ready for failover, which is a business continuity capability.
★ When this WOULD be the correct answer
A question that asks: 'A company expects a sudden spike in user traffic and needs to automatically add virtual machines to handle the load. Which cloud benefit does this describe?' would make scalability the correct answer.
Why candidates choose this
Candidates may confuse the ability to replicate an environment (which involves scaling out resources) with scalability, not realizing that the primary purpose here is continuity after a disaster, not handling variable demand.
✗High availabilityWrong answer — click to see why▾
Why this is wrong here
High availability focuses on ensuring services remain accessible despite component failures within a single region, not on replicating an entire environment for disaster recovery across regions.
★ When this WOULD be the correct answer
A question describing an application deployed across multiple Azure availability zones to withstand datacenter failures without downtime would make high availability the correct answer.
Why candidates choose this
Candidates confuse disaster recovery with high availability because both involve redundancy and uptime, but high availability is about immediate failover within a region, not recovery after a major outage.
✗ElasticityWrong answer — click to see why▾
Why this is wrong here
Elasticity refers to the ability to dynamically scale resources up or down based on demand, not to the ability to recover and resume operations after a disaster. The scenario describes disaster recovery, which is a business continuity feature.
★ When this WOULD be the correct answer
A company expects sudden spikes in traffic and wants its cloud resources to automatically adjust to handle the load without manual intervention. In that context, elasticity would be the correct answer.
Why candidates choose this
Candidates may confuse elasticity with the ability to quickly provision resources in a disaster recovery scenario, but elasticity is about scaling to meet demand, not about recovery from outages.
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
About these practice questions
Courseiva writes every AZ-900 question from scratch — 981 in total, each with an explanation and a wrong-answer breakdown. None are copied from real exams or dumps. Learn why practice questions differ from exam dumps →
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.