This looks to be a useful service and another nice extension to AWS. However after re-reading Jeff's post, I found: All metrics are retained for a period of

This looks to be a useful service and another nice extension to AWS. However after re-reading Jeff's post, I found: All metrics are retained for a period of two weeks. This is a severe limitation. For short-term server health and autoscaling it makes perfect sense. For higher-level system metrics and application metrics I'd love to see CloudWatch store my stats for at least a year.