Microsoft Azure Fundamentals (AZ-900)Describe cloud conceptsMedium
A large enterprise needs to ensure that critical applications remain accessible even if an entire Azure region experiences a major outage. Which cloud concept is primarily designed to address this requirement?
- AMeasured Service
- BHigh Availability
- CRapid Elasticity
- DBroad Network Access
Show answer & explanationAnswer & explanation
Correct answer: B. High Availability
High Availability ensures that applications and services remain operational and accessible, even in the event of failures, often by distributing resources across multiple fault domains or regions.
Why the other options are wrong
- A. Measured Service refers to resource usage tracking for billing, not system resilience.
- C. Rapid Elasticity is about dynamically scaling resources to meet demand, not about surviving major outages.
- D. Broad Network Access allows services to be accessed from various devices over the network, but doesn't guarantee uptime during outages.
High Availability
High availability (HA) refers to systems designed to operate continuously without failure for a long time, minimizing downtime by using redundancy and failover mechanisms.
- Ensures continuous operation of services.
- Achieved through redundancy, replication, and failover.
- Critical for mission-critical applications.
Memory trick: Always Up, Always On: cloud's promise of resilience.