AZ-900 Practice Question 32: Reliability Benefit
Microsoft Azure Fundamentals (AZ-900) · Test 4 · question 2 of 10
An architect explains that because Azure spreads resources across regions all over the world, an application can be designed so that a catastrophic event in one region does not stop the service. Which benefit of cloud computing is she describing?
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Answer:
Reliability is defined as the ability of a system to recover from failures and continue to function, and it is one of the pillars of the Microsoft Azure Well-Architected Framework. Microsoft ties it directly to global scale: the cloud's decentralized design lets you deploy resources in regions around the world, so even if one region suffers a catastrophic event the others keep running, and in some cases the platform shifts to another region with no action from you at all.
Option A, scalability, is the ability to adjust resources to meet demand. It is about load, not about surviving failure. Option C, governance, is about setting and auditing standards for what may be deployed and how it must be configured; it does not keep a service running through a regional disaster. Option D, performance predictability, is the closest wrong answer; it is about predicting the resources needed to deliver a good customer experience, supported by autoscaling, load balancing, and high availability. It addresses expected demand rather than recovery from catastrophe.
Reference: Describe the benefits of reliability and predictability in the cloud