Analyze AWS and GCP billing, usage, and cost trends for optimization. Implement cost-saving strategies (e.g., rightsizing, RIs, savings plans). Establish tagging policies, cost allocation, and chargeback/showback models. Optimize data transfer, storage, and networking costs. Monitor spot instances, auto-scaling, and compute savings. Define and enforce FinOps best practices. Collaborate with finance to forecast expenses, create budgets, and track KPIs. Align architecture decisions with cost efficiency with engineering teams. Implement automated cost reporting, anomaly detection, and alerting. Utilize AWS Cost Explorer, Budgets, Trusted Advisor, Cost & Usage Reports, GCP Billing Reports, Cost Tables, Committed Use Discounts Analysis, and Recommender API. Integrate third-party cost optimization tools. Develop automation scripts (AWS Lambda, Python, Terraform, AWS SDKs) for cost policies. Leverage FinOps dashboards and Tableau for visualization. Implement Continuous Accounting with the finance team.