CloudWatch

Monitors

compute
- Autoscaling groups
- elastic load balancers
- Route53 Health Checks
storage
- EBS volumes
- storage gateways
- CloudFront
other
- SNS topics
- SQS queues
- Opsworks
- logs
- estimated billing charges
EC2 metrics
- defaults to 5 minute updates, can be reduced to 1 minute
- CPU
- Network
- Disk
- Status Checks
- NOT RAM or disk usage levels
metrics
- detail, every 1 minutes
- normal, every 5 minutes
- custom minimum interval is 1 minute
alarms
- monitor any metric, including billing
storage
- default is logs are never deleted
tips
- can send data from on prem, need to install agent first

CloudTrail

monitors API calls,
used for auditing

Config

audit changes to your resources
can notify of changes to resources