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AWS17 Jun 2026·10 min read

10 AWS Cost Optimization Strategies to Know

Srinivasa Rao Maganti — Lead Cloud & DevOps Trainer at CloudTechTrainings

Srinivasa Rao Maganti

Cloud Architect & Lead Trainer, CloudTechTrainings

#AWS#Cost Optimization#Cloud Economics#SAA-C03#FinOps

AWS bills can balloon quickly when teams are in "get it working" mode. But cloud cost optimization doesn't mean cutting corners — it means matching spend to actual business value. Here are 10 proven strategies used by engineering teams managing serious AWS workloads.

35%
Avg cloud waste in enterprises
72%
Savings with Reserved Instances
90%
Spot instance discount vs on-demand
₹0
Cost of rightsizing with AWS tools

Strategy 1–3: Commitment Discounts

  • Reserved Instances (1 or 3 year) — up to 72% off for steady-state workloads like databases and web servers
  • Compute Savings Plans — 66% off, more flexible than RIs, auto-applies to any instance type in a region
  • EC2 Instance Savings Plans — 72% off for a specific instance family, less flexible but maximum discount

Tip: Which to Choose?

Start with Compute Savings Plans for flexibility. Only move to Reserved Instances for workloads where you can predict the exact instance type 12+ months ahead — like large RDS databases.

Strategy 4–6: Rightsizing

  • Use AWS Compute Optimizer — free ML-powered recommendations for EC2, Lambda, and EBS rightsizing
  • Analyze CloudWatch CPU and memory metrics over 14 days before resizing — avoid resizing during peak periods
  • Rightsize RDS too — most databases are over-provisioned by 50%+ in development environments

Strategy 7–8: Spot and Scheduled Instances

  • Spot Instances for stateless, fault-tolerant workloads (batch jobs, CI/CD build agents, data processing) — up to 90% cheaper
  • Scheduled Scaling — turn off dev/test environments outside business hours with Auto Scaling scheduled actions
bash
# Example: Auto-schedule dev environment shutdown at 7 PM
aws autoscaling put-scheduled-update-group-action \
  --auto-scaling-group-name my-dev-asg \
  --scheduled-action-name scale-down-evening \
  --recurrence "0 13 * * MON-FRI" \
  --desired-capacity 0

Strategy 9–10: Architecture and Tagging

  • Use S3 Intelligent-Tiering for data you can't predict — auto-moves objects between tiers, can reduce storage costs by 40%
  • Tag everything with environment, team, and cost-center — Cost Allocation Tags enable per-team billing and identify waste

Note: Start with AWS Cost Explorer

Before optimizing, understand where your money actually goes. Cost Explorer's "Top 5 services by cost" view often reveals surprising spenders — frequently EC2, RDS, and data transfer.

Our AWS SAA-C03 training includes a dedicated cost management module covering Cost Explorer, Trusted Advisor, and real-world cost architecture decisions — because passing the exam is only half the battle.

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