Includes the ability to run systems to deliver business value at the lowest price point.

- Adopt a consumption mode: Pay only for what you use.
- Measure overall efficiency: Use CloudWatch
- Stop spending money on data-center operations:
    AWS does the infrastructure part and enable customer to focus on Organisation projects.
- Analyze and Attribute expenditure:
    Accurate identification of system usage and cost help measure Return of Investment (RoI) - Make sure to use tags.
- Use managed & application level services to reduce cost of ownership 
    - As managed services operate at cloud scale, they can offer a lower cost per transaction or service.

- Expenditure Awareness: AWS Budget, AWS Cost & Budget, AWS Usage Report
- Cost Effective Resources: AWS Spot instances & Reserve Instances, S3 Glacier.
- Matching Supply Demand: AWS AutoScaling, Lambda
- Optimizing Over time: AWS Trusted Advisor, Cost & Usage Report.