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Why does CloudWatch aggregate metric data points over time intervals instead of storing every single data point?

hard📝 Conceptual Q10 of 15
AWS - CloudWatch
Why does CloudWatch aggregate metric data points over time intervals instead of storing every single data point?
ATo reduce storage costs and improve query performance
BBecause AWS limits the number of data points per metric
CTo avoid data duplication across regions
DBecause metrics are only updated once per day
Step-by-Step Solution
Solution:
  1. Step 1: Understand Metric Aggregation Purpose

    Aggregating reduces storage needs and speeds up queries.
  2. Step 2: Analyze Other Options

    Limits exist but aggregation is for efficiency; duplication and daily updates are incorrect reasons.
  3. Final Answer:

    To reduce storage costs and improve query performance -> Option A
  4. Quick Check:

    Aggregation = cost and performance optimization [OK]
Quick Trick: Aggregation saves cost and speeds queries [OK]
Common Mistakes:
MISTAKES
  • Thinking aggregation is due to limits
  • Confusing with replication issues
  • Assuming infrequent metric updates

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