Ability to use dimensions (attributes) to segment metrics
instance.id
environment.name
Metric resolution (StorageResolution API parameter)
Standard: 1 minute (60 seconds)
High Resolution: 1/5/10/30 seconds - higher cost
If you set CloudWatch Alarms on High resolution metrics. You can trigger high-resolution alarm every 10 or 30 seconds or you can set regular alarm with a period of 60 seconds
Accept the metric data points 2 weeks in the past and 2 hours in the future
Make sure you configure your EC2 instance time correctly