Cloud Custodian
Rules engine for cloud security, cost optimization, and governance
...It consolidates many of the ad-hoc scripts organizations have into a lightweight and flexible tool, with unified metrics and reporting. Custodian supports managing AWS, Azure, and GCP public cloud environments. Besides just providing reports of issues, Custodian can actively enforce the security 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. ...