This is a comprehensive multi-cloud cost optimization reference that covers AWS, Azure, and GCP. It walks you through the standard playbook: visibility through tagging, right-sizing resources, picking the right pricing models (reserved instances, spot, savings plans), and architecture patterns like serverless-first and multi-tier storage. The Terraform examples are actually useful, especially the S3 lifecycle rules and auto-scaling configs. What I like is the realistic savings percentages and the practical checklist at the end. It won't magically cut your cloud bill, but if you're over budget or just don't have a systematic approach to cost management yet, this gives you a solid starting framework.
npx skills add https://github.com/sickn33/antigravity-awesome-skills --skill cost-optimization