A company is implementing a new e-commerce site that is expected to get seasonal and flash- sale induced traffic peaks from all over the world. It is projected that a minute of downtime could cause…

Question

Options

• AScalability
• BAvailability
• CReliability
• DMaintainability
• EUsability

• A
  43% (15)
• B
  20% (7)
• C
  29% (10)
• D
  9% (3)

Explanation

There appears to be an error in the provided answer key. Based on the scenario, the correct answers should be A (Scalability) and B (Availability) - not A and E.

Here's why:

Scalability (A) is correct because the system must handle unpredictable traffic spikes from seasonal events and flash sales without degrading performance. AEM as a Cloud Service's auto-scaling capability directly addresses this need.

Availability (B) is correct - not Usability (E) - because the question explicitly states "a minute of downtime could cause excessive lost revenue." High availability is the defining requirement here, and it's a core differentiator of AEM as a Cloud Service (zero-downtime deployments, auto-recovery).

Why the other options are less critical here:

• Reliability (C) overlaps with availability but focuses on consistent behavior over time rather than uptime itself - availability is the more precise fit.
• Maintainability (D) matters for long-term code health but isn't a primary concern for revenue loss from downtime.
• Usability (E) refers to ease of use for end users or developers - the scenario gives no indication this is a concern, making it the clear outlier.

Memory tip: When a question mentions traffic spikes → think Scalability; when it mentions revenue loss from downtime → think Availability. These two are the classic "black Friday e-commerce" NFR pair.

If this is from an official AEM certification prep resource, I'd recommend double-checking the source - the scenario strongly contradicts E as a correct answer.

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