Actions taken by a user, role, or an AWS service are recorded as events in CloudTrail. Events include actions taken in the AWS Management Console, AWS Command Line Interface, and AWS SDKs and APIs.
On-demand self-service: Can provision capabilities as needed, without needing human interaction
Broad Network Access: Available over the network and accessed through standard mechanisms (like http)
Resource Pooling: No control or knowledge of the exact location of the resources. Resources are pooled to serve multiple consumers using a multi-tenant model
Rapid Elasticity: Capabilities can be elastically provisioned and released rapidly, to keep up with demand.
Measured Service: Resource usage can be monitored, controlled, reported, & BILLED