A company needs Amazon EC2 instances for a workload that can tolerate interruptions. Which EC2 instance purchasing option meets this requirement with the LARGEST discount compared to On-Demand prices?

Question

Options

• ASpot Instances
• BConvertible Reserved Instances
• CStandard Reserved Instances
• DDedicated Hosts

• A
  94% (31)
• B
  3% (1)
• C
  3% (1)

Explanation

Explanation

Spot Instances (A) are the correct choice because they leverage unused AWS EC2 capacity and can offer discounts of up to 90% off On-Demand prices - the largest discount available - making them ideal for fault-tolerant, interruption-tolerant workloads like batch processing, data analysis, or stateless applications.

Reserved Instances (B & C) offer discounts of only up to 72% (Convertible) or 75% (Standard) compared to On-Demand, and they require a 1- or 3-year commitment - neither provides as large a discount as Spot, and they're designed for steady-state, predictable workloads. Dedicated Hosts (D) are actually the most expensive option, designed for compliance or licensing needs where you require physical server isolation - they provide no discount advantage.

Memory Tip: Think "Spot = Spotty availability = Huge savings" - the trade-off for tolerating interruptions is the biggest reward in savings. If a question mentions "interruptions," "fault-tolerant," or "flexible timing," Spot Instances is almost always the answer.

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