This pillar focusses on minimizing the environmental impact of running cloud workloads.

- Understand Your Impact : Establish peformance indicators, evaluate important to maximize the energy efficiency of the underlaying hardware & minimizing idle resources.
- Anticipating and Adopt new more efficient hardware & Software offerings & design flexiblity to adpopt new technologies over time.
- Use Managed Services:
    Shared service reduce the amount of infrastructure. Managed service help automate sustainablity as moving infrequent accesed data to cold storage & adjust compute capacity
- Reduce Downstream impact of your workloads.
    Reduce impact of your cloud workloads. Reduce the amount of energy or resource required to use your services.

- EC2 AutoScaling, Serverless Offering,
- Cost Explorer AWS EC2, Spot Instances,
- EFS - IA, S3 Glacier, EBS, Cold HDD Volumes
- S3 Lifecycle config, S3 Intelligent Tiering
- Amazon data lifecycle manager
- Read local Write Global: RDS Read Replica, Aurora Global DB, Dynamo Global Table, CloudFront