How do you implement cloud cost optimization strategies?
Cloud cost optimization requires continuous visibility, right-sizing, and commitment management. Visibility: implement cost allocation tags on all resources (team, project, environment, application), use cloud cost management tools (AWS Cost Explorer, Azure Cost Management, GCP Billing, or third-party: Kubecost, Vantage), and create team-level cost dashboards with budget alerts. Right-sizing: analyze resource utilization (CPU, memory, network, storage) over 2-4 weeks, downsize overprovisioned resources (many production instances use under 30% of allocated capacity), use burstable instances (T-series on AWS) for variable workloads, and implement auto-scaling to match capacity with demand. Commitment discounts: Reserved Instances or Savings Plans for predictable baseline workloads (30-60% savings), spot/preemptible instances for fault-tolerant workloads (60-90% savings), and committed use discounts for databases and long-running services. Architecture optimization: use serverless for intermittent workloads (zero cost when idle), implement caching to reduce database and API costs, use CDN for static content to reduce origin server load, compress and optimize data transfer (data transfer is a significant cloud cost), and implement data lifecycle policies (archive old data to cheaper storage tiers). Container optimization: right-size container resource requests and limits, implement cluster autoscaling for node efficiency, use node pools with different instance types matched to workload requirements, and implement pod priority for efficient bin-packing. Storage: implement lifecycle policies (transition to IA, Glacier based on access patterns), delete unused EBS volumes and snapshots, and implement intelligent tiering for S3. Database: use reserved instances for production databases, implement read replicas only where needed, and right-size instance types based on connection and query patterns. Governance: implement budgets with alerts and automated actions, require cost analysis in architectural reviews, and conduct monthly cost optimization reviews.