Learn CLOUD-CUSTODIAN with Real Code Examples
Updated Nov 27, 2025
Learning Path
Learn cloud provider resource models
Understand filters and actions in Cloud Custodian
Write and test basic policies
Explore multi-cloud policies
Automate reporting and remediation workflows
Skill Improvement Plan
Week 1: Install Cloud Custodian and test basic policies
Week 2: Apply filters and simple actions
Week 3: Create event-driven policies
Week 4: Integrate multi-cloud policies
Week 5: Implement automated reporting and CI/CD integration
Interview Questions
What is Cloud Custodian and how does it work?
Explain policy, filter, and action in Cloud Custodian.
How can Cloud Custodian help in cost optimization?
Describe event-driven vs scheduled policies.
Compare Cloud Custodian with AWS Config or Open Policy Agent.
Cheat Sheet
custodian validate policy.yml - check syntax
custodian run policy.yml - execute policy
custodian report policy.yml - generate reports
custodian query policy.yml - test filters
custodian logs policy.yml - view execution logs
Books
Mastering Cloud Custodian
Policy-as-Code with Cloud Custodian
Automated Cloud Governance and Compliance
Cloud Security and Cost Management with Custodian
Enterprise Cloud Policy Automation
Tutorials
Getting started with Cloud Custodian
Writing your first policy YAML
Implementing cost optimization policies
Security compliance and remediation policies
Event-driven policies and reporting
Official Docs
https://cloudcustodian.io/docs/index.html
Cloud Custodian GitHub repository
Cloud Custodian Slack and community resources
Community Links
Cloud Custodian GitHub
Cloud Custodian Slack
StackOverflow Cloud Custodian tags
Official Cloud Custodian documentation
Community tutorials and blogs
Community Support
Cloud Custodian GitHub
CNCF and cloud-native Slack channels
StackOverflow Cloud Custodian tags
Official documentation and examples
Community forums and tutorials