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AWS Certified Solutions Architect study material · question 477 of 500

Which two commitments do Reserved Instances and Savings Plans differ on? Choose two.

  1. A Savings Plan commits to a steady dollar amount of usage per hour
  2. A Reserved Instance commits to a dollar amount per hour
  3. A Savings Plan commits to a single instance family
  4. A Reserved Instance commits to a fixed instance configuration including type and Region
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Answer: D. A Reserved Instance commits to a fixed instance configuration including type and Region
A. A Savings Plan commits to a steady dollar amount of usage per hour

Reserved Instances fix the configuration; Savings Plans fix the spend rate, which is why a Compute Savings Plan applies across families and Regions.

Source: Amazon EC2 billing and purchasing options (Amazon Web Services) — Instance purchasing options

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