What is Cloud Custodian?

Cloud Custodian is an open-source cloud governance tool that enables users to define and enforce policies for cloud resources. It allows for policy-as-code, using YAML to define rules for identifying and managing resources based on various criteria (e.g., resource type, tags, cost, compliance). It is commonly used for cost optimization, security compliance, and operational management across multiple cloud providers like AWS, Azure, and GCP. Custodian can automate actions like stopping instances, deleting resources, or sending notifications based on policy violations.