CompTIA Cloud Essentials+ (CLO-002)Management and Technical OperationsEasy
A cloud architect is designing a highly available application for a financial institution. The requirement states that the application must remain operational even if an entire data center becomes unavailable. Which cloud deployment strategy best addresses this requirement?
- AMulti-region deployment
- BSingle region, single availability zone deployment
- CSingle region, multi-availability zone deployment
- DOn-premises deployment with failover to a single cloud region
Show answer & explanationAnswer & explanation
Correct answer: A. Multi-region deployment
A multi-region deployment ensures that the application is distributed across geographically separate data centers, providing resilience against a complete data center or regional outage. This is crucial for high availability requirements.
Why the other options are wrong
- B. This option offers the least resilience, as a single point of failure (the data center) would bring down the application.
- C. While better than single AZ, a single region multi-AZ deployment is still vulnerable to a regional outage.
- D. This still introduces a single point of failure if the single cloud region becomes unavailable.
Multi-Region Deployment
Deploying an application across multiple, geographically separate cloud regions to achieve high availability and disaster recovery.
- Provides resilience against regional failures.
- Increases latency due to geographical distance.
- Typically more complex and costly to manage.
Memory trick: Regions make resilience, zones make it strong, but single points make it wrong.