# Performance Efficiency

*The ability to use computing resources efficiently to meet system requirements and to maintain that efficiency as demand changes and technologies evolve.*

## Design Principles

* Democratize advanced technologies
  * Is there a managed service for that?
* Go global in minutes
* User serverless architectures
* Experiment more often
* Mechanical sympathy

## Best Practices

### Selection

* Compute
  * Auto Scaling
* Storage
  * [Simple Storage Service (S3)](/cloud-computing/aws/simple-storage-service-s3.md)
  * EBS
* Databases
  * [DynamoDB](/cloud-computing/aws/databases/dynamodb.md)
  * [RDS](/cloud-computing/aws/databases/rds.md)
* Network
  * [VPC](/cloud-computing/aws/vpc.md)
  * [Route53](/cloud-computing/aws/route53.md)
  * [Direct Connect](/cloud-computing/aws/vpc/hybrid-environments/direct-connect.md)

### Review

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### Monitoring

* Metrics, Alarms, Notifications
  * [CloudWatch](/cloud-computing/aws/monitoring/cloudwatch.md)
* Automated Actions
  * [Lambda](/cloud-computing/aws/serverless-architectures/lambda.md)

### Tradeoffs

* Global Caching
  * [Cloudfront](/cloud-computing/aws/cloudfront.md)
* Request Offloading
  * [ElastiCache](/cloud-computing/aws/databases/elasticache.md)
* Data Migration
  * [Snowball](/cloud-computing/aws/simple-storage-service-s3.md#snowball)
* Read Replicas
  * [RDS](/cloud-computing/aws/databases/rds.md#read-replicas)


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