Cloud Custodian
Rules engine for cloud security, cost optimization, and governance
... policies you define. Setup off-hours to save you money, by turning-off resources when they're not being used. Garbage collects unused resources by looking into utilization metrics. Custodian can be run locally, on an instance, or Serverless in AWS Lambda. Cloud Custodian is open source and free for everyone to use. Use Custodian to build complex workflows or simple queries, millions of policies can be constructed using our easy-to-read DSL.