Cost Optimization Strategies
Cloud costs can spiral without governance. Cost optimization is about maximizing value while minimizing spend. It's not about being cheap — it's about being smart with your resources.
The Cost Optimization Framework
┌──────────────────────────────────────────────────────┐
│ COST OPTIMIZATION PILLARS │
│ │
│ ┌─────────────┐ ┌─────────────┐ ┌─────────────┐ │
│ │ Rightsize │ │ Purchase │ │ Optimize │ │
│ │ │ │ Strategy │ │ Storage │ │
│ │ Match │ │ │ │ │ │
│ │ instance to │ │ Reserved │ │ S3 classes, │ │
│ │ workload │ │ Instances,│ │ lifecycle │ │
│ │ │ │ Savings │ │ policies │ │
│ │ │ │ Plans, │ │ │ │
│ │ │ │ Spot │ │ │ │
│ └─────────────┘ └─────────────┘ └─────────────┘ │
│ │
│ ┌─────────────┐ ┌─────────────┐ ┌─────────────┐ │
│ │ Delete │ │ Monitor │ │ Use Managed│ │
│ │ Waste │ │ & Report │ │ Services │ │
│ │ │ │ │ │ │ │
│ │ Unused │ │ Cost │ │ RDS vs self │ │
│ │ resources, │ │ Explorer, │ │ managed DB, │ │
│ │ old │ │ budgets, │ │ Lambda vs │ │
│ │ snapshots │ │ alerts │ │ EC2 │ │
│ └─────────────┘ └─────────────┘ └─────────────┘ │
└──────────────────────────────────────────────────────┘
Purchase Options
On-Demand: Pay per hour/second with no commitment. Best for variable, short-term workloads.
Reserved Instances: Commit to 1 or 3 years for up to 72% discount. Best for steady-state workloads.
Savings Plans: Flexible commitment to a $/hour amount. More flexible than Reserved Instances.
Spot Instances: Bid on unused capacity for up to 90% discount. Best for fault-tolerant, flexible workloads.
Quick Wins
1. Shut down dev/test environments outside business hours
Savings: ~65% on non-production resources
2. Delete unattached EBS volumes (orphaned from terminated EC2)
Savings: varies, often $50-200/month
3. Rightsize over-provisioned instances
Review CloudWatch metrics, downsize where possible
Savings: 30-50% on compute costs
4. Use S3 Intelligent-Tiering for unpredictable access patterns
Auto-moves data to cheapest tier
5. Enable billing alerts
Set up AWS Budgets to catch overspending early
Tools for Cost Management
AWS Cost Explorer: Visualize and forecast spending. AWS Budgets: Set custom budgets with alerts. AWS Trusted Advisor: Recommendations for cost optimization. Cost and Usage Report: Detailed billing data for analysis.