CloudThinker Use Case: Global AWS FinOps & Cost Optimization
VH
Van Hoang Kha

CloudThinker Use Case: Global AWS FinOps & Cost Optimization

The Challenge

In multi-region AWS environments, operational costs often spiral out of control due to several common issues:

  • Underutilized EC2 instances: Running with average CPU utilization <5%
  • Orphaned EBS volumes: Unattached volumes and snapshots older than 90 days
  • Idle Elastic IPs: Unassociated IP addresses still incurring charges
  • Unoptimized S3 buckets: No Intelligent-Tiering or lifecycle policies implemented

The Result: AWS costs can increase 20–30% monthly without proper visibility and control mechanisms.

The CloudThinker Solution

CloudThinker performs automated discovery across 21 AWS regions, delivering comprehensive visibility into your cloud estate:

Discovery Results

  • 107 AWS resources inventoried and analyzed
  • 31 optimization opportunities identified
  • Potential savings: $1,956/month (~$23,500/year)

Specific Optimization Recommendations

Storage Optimization

  • S3 Intelligent-Tiering: Reduce ~20–30% storage costs through automated storage class transitions
  • 2 idle EBS volumes (508GB total): Save ~$50.8/month
  • Snapshot cleanup: Remove snapshots older than 90 days no longer needed

Compute Optimization

  • Rightsize EC2 m5.xlarge: Instance with 0.2% CPU utilization → downsize to save ~$120/month
  • Reserved Instances: Convert On-Demand to RIs for stable workloads
  • Spot Instances: Apply to non-production and batch workloads

Network Optimization

  • 6 unassociated Elastic IPs: Release to save ~$21.6/month
  • Cross-region transfer analysis: Optimize data transfer costs

Quantified Results

Metric Current Optimized Savings
Monthly Cost $4,350 $3,261 $1,089 (25%)
Annual Cost $52,200 $39,132 $13,068
ROI Timeline - - Immediate–3 months

FinOps Dashboard

CloudThinker provides a comprehensive FinOps Dashboard with critical visualizations:

Key Metrics

  1. Cost by Region (bar chart)

    • Identify highest-cost regions
    • Compare cost distribution across locations
  2. Cost by Service (pie chart)

    • EC2: 45%
    • RDS: 25%
    • S3: 15%
    • Other services: 15%
  3. Top 10 Cost Drivers (table)

    • Detailed breakdown of most expensive resources
    • Specific action items for each resource
  4. Current vs Optimized (stacked bar comparison)

    • Visualize savings potential
    • Breakdown by service category
  5. Monthly Projection (trendline)

    • Forecast costs before/after optimization
    • Track progress over time

AI-Powered FinOps Prompt

You are a FinOps & Cloud Optimization Expert.

Analyze my entire AWS environment across all regions and all services,
and propose cost optimization actions. In addition to structured
recommendations, also create a visual dashboard to summarize cost insights.

Context:

  • Scope: All AWS resources, all regions, all services
  • Constraints:
    • No downtime for production workloads (09:00–21:00 local time)
    • No data loss
    • SLA: web latency p99 < 200ms, RDS CPU < 70%
  • Goal: minimize AWS bill globally, provide executive visibility

Instructions:

  1. Perform a global scan and identify:
  • Idle or underutilized resources
  • Orphaned resources (unattached volumes, idle ELB, unused IPs, snapshots)
  • Overprovisioned resources
  1. Recommend pricing model optimizations:
  • Savings Plans, Reserved Instances, Spot Instances
  • Consolidated billing opportunities
  1. Optimize storage & networking:
  • S3 storage class transitions
  • Snapshot and backup cleanup
  • Cross-region transfer analysis
  1. Prioritize recommendations with:
  • Resource/Service + Region
  • Suggested Change
  • Estimated Saving ($ and %)
  • Risk/Trade-off
  • Implementation Steps (CLI/Console/IaC hint)
  1. Provide a global roadmap (Quick Wins → Medium-term → Long-term).

  2. Create a FinOps Dashboard with:

  • Cost by Region (bar chart)
  • Cost by Service (pie chart)
  • Top 10 most expensive resources (table)
  • Projected savings after optimization
  • Trend chart (monthly cost projection before/after)
  1. Conclude with top 3 highest ROI actions and estimated new
    global AWS monthly cost.

Implementation Roadmap

Quick Wins (Week 1-2)

  • Release 6 unassociated Elastic IPs → $21.6/month
  • Delete 2 idle EBS volumes → $50.8/month
  • Enable S3 Intelligent-Tiering → $300-400/month

Medium-term (Month 1-3)

  • Rightsize EC2 instances → $120/month
  • Implement Reserved Instances for stable workloads → $400/month
  • Cleanup old snapshots → $50/month

Long-term (Month 3-6)

  • Adopt Savings Plans strategically → $200/month
  • Implement Spot Instances for batch workloads → $150/month
  • Optimize cross-region data transfer → $100/month

Top 3 Highest ROI Actions

1. S3 Intelligent-Tiering

  • Effort: Low (1-2 hours)
  • Savings: $300-400/month
  • Risk: None (AWS-managed)
  • ROI: Immediate

2. EC2 Rightsizing

  • Effort: Medium (4-8 hours)
  • Savings: $120/month
  • Risk: Low (requires monitoring)
  • ROI: 1 week

3. Reserved Instances

  • Effort: Medium (planning required)
  • Savings: $400/month
  • Risk: Low (commitment-based)
  • ROI: Immediate after purchase

Key Outcomes

CloudThinker helps organizations achieve:

Immediate ~25% AWS cost reduction without impacting SLAs
Standardized FinOps process: Discover → Recommend → Optimize → Govern
Enhanced visibility for executive teams on cloud spending
Automated continuous cost optimization
Governance with cost allocation tracking

Business Impact

  • Annual Savings: $13,068
  • Time Saved: 40+ hours/month in manual analysis
  • Risk Reduction: Proactive cost anomaly detection
  • Strategic Planning: Data-driven capacity planning


CloudThinker transforms cloud cost management from reactive firefighting to proactive financial engineering.