After purchasing a Savings Plan, a user notices that some EC2 instance usage is not receiving the discount. What is the most probable cause?

medium📝 Debug Q7 of 15

AWS - Cost Optimization

AThe user did not enable billing alerts to activate the discount.

BThe Savings Plan only applies to RDS instances, not EC2.

CThe instances are running in a different AWS region than the Savings Plan coverage.

DThe Savings Plan discount only applies to spot instances, not on-demand.

Step-by-Step Solution

Solution:

Step 1: Identify Savings Plan scope
Savings Plans are region-specific; discounts apply only to usage within the selected region.
Step 2: Analyze instance usage
If instances run outside the Savings Plan's region, they won't receive the discount.
Final Answer:
The instances are running in a different AWS region than the Savings Plan coverage. -> Option C
Quick Check:
Verify instance region matches Savings Plan region [OK]

Quick Trick: Savings Plan discounts apply only within the purchased region [OK]

Common Mistakes:

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