Understanding cost optimization strategies
Cost Optimization Hub groups your recommendations into the following cost optimization strategies:
- Purchase Savings Plans
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Purchase Compute, EC2 instance, and SageMaker Savings Plans.
- Purchase reservations
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Purchase EC2, Amazon RDS, OpenSearch, Amazon Redshift, ElastiCache, MemoryDB, and DynamoDB reservations.
- Stop
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Stop idle or unused resources to save up to 100% of the resource cost.
- Delete
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Delete idle or unused resources to save up to 100% of the resource cost.
- Scale in
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Scale in idle or unused resources to save on resource costs.
- Rightsize
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Move to a smaller EC2 instance type of the same CPU architecture.
- Upgrade
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Move to a later generation product, such as moving from Amazon EBS io1 volume type to io2.
- Migrate to Graviton
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Move from x86 to Graviton to save costs.
The following table shows the full mapping of recommended actions and resource type.
| Action | Resource type | Conditions | Implementation effort | Resource restart needed | Rollback possible |
|---|---|---|---|---|---|
| Purchase Savings Plans | Compute Savings Plans | All | Very low | No | No |
| EC2 Instance Savings Plans | All | Very low | No | No | |
| SageMaker Savings Plans | All | Very low | No | No | |
| Purchase reservations | EC2 Reserved Instances | All | Very low | No | Yes |
| Amazon RDS Reserved Instances | All | Very low | No | No | |
| Amazon Redshift reserved nodes | All | Very low | No | No | |
| OpenSearch Reserved Instances | All | Very low | No | No | |
| ElastiCache reserved nodes | All | Very low | No | No | |
| MemoryDB reserved instances | All | Very low | No | No | |
| DynamoDB reserved capacity | All | Very low | No | No | |
| Stop | EC2 instance | All | Low | No | Yes |
| RDS DB instance | RDS MySQL and RDS PostgreSQL engines only | Low | Yes | Yes | |
| Delete | EBS volume | All | Low | No | No |
| Amazon ECS service | All | Low | No | No | |
| RDS DB instance | Aurora MySQL and Aurora PostgreSQL engines only | Low | No | Yes | |
| Scale in | EC2 Auto Scaling group | All | Low | No | No |
| Rightsize | EC2 instance (standalone) | No hypervisor change | Medium | Yes | Yes |
| EC2 instance (standalone) | With hypervisor change | High | Yes | Yes | |
| EC2 Auto Scaling group | All | Medium | Yes | Yes | |
| EBS volume | All | Low | No | Yes | |
| Lambda function | All | Low | No | Yes | |
| Amazon ECS service | All | Low | Yes | Yes | |
| RDS DB instance | All | Medium | Yes | Yes | |
| RDS DB instance storage | All | Low | No | Yes | |
| Aurora DB cluster storage | All | Low | No | Yes | |
| Upgrade | EC2 instance (standalone) | No hypervisor change | Medium | Yes | Yes |
| EC2 instance (standalone) | With hypervisor change | High | Yes | Yes | |
| EC2 Auto Scaling group | All | Medium | Yes | Yes | |
| EBS volume | All | Low | No | Yes | |
| RDS DB instance | All | Medium | Yes | Yes | |
| RDS DB instance storage | All | Low | No | Yes | |
| Migrate to Graviton | EC2 instance (standalone) | With Graviton-compatible inferred workload type | High | Yes | Yes |
| EC2 instance (standalone) | Without Graviton-compatible inferred workload type | Very high | Yes | Yes | |
| EC2 Auto Scaling group | With Graviton-compatible inferred workload type | High | Yes | Yes | |
| EC2 Auto Scaling group | Without Graviton-compatible inferred workload type | Very high | Yes | Yes | |
| RDS DB instance | All | Medium | Yes | Yes |
