CloudWatch Metrics retention

• outline

Retention of metrics stored in Amazon CloudWatch is differ from datapoints. As of November 2016, it has changed from 14 days to a maximum of 15 months.

• retentions

1 minute datapoints are available for 15 days
5 minute datapoints are available for 63 days
1 hour datapoints are available for 455 day

• reference

https://docs.aws.amazon.com/AmazonCloudWatch/latest/monitoring/cloudwatch_concepts.html#Metric
https://aws.amazon.com/ko/about-aws/whats-new/2016/11/cloudwatch-extends-metrics-retention-and-new-user-interface/