An e-commerce site must stay online even if individual servers fail. Which cloud benefit primarily describes minimizing downtime through redundancy?
A.Agility
Agility is the ability to deploy and configure resources quickly — not uptime.
B.High availability
High availability = resilience to failure through redundancy, guaranteed by SLAs.
C.Scalability
Scalability handles demand growth — a different benefit.
D.Economies of scale
Economies of scale is a cost benefit, not availability.
Why this answer
High availability means keeping services running despite component failures, typically via redundant resources across fault domains or availability zones, and is expressed through SLAs (e.g., 99.9% or 99.95% uptime).
Correct answer: B · Last reviewed 2026-02-13
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