Executive Summary
December 2025 MTD
$7.79
Dec 1-7 Estimated
November 2025 Total
$284.35
Complete Month Actual
October 2025 Total
$0.03
Complete Month Actual
September 2025 Total
$0.00
Complete Month Actual
Cost Anomaly Detected
- Massive Cost Increase: Spending jumped from $0.03 in October to $284.35 in November
- New Infrastructure Deployment: Major deployment starting November 6, 2025
- Peak Day: November 8, 2025 at $26.86 USD
- Recent Stabilization: Costs stabilized around $5-19/day after initial deployment spike
- Primary Drivers: EKS Clusters ($128.97), EC2 Other ($78.92), EC2 Compute ($44.14), VPC ($13.80)
Daily Cost Trend - November 2025
Data Source: AWS Cost Explorer API - aws ce get-cost-and-usage
Query Date: December 1, 2025
Status: All November data is estimated (marked as true in API response)
Query Date: December 1, 2025
Status: All November data is estimated (marked as true in API response)
3-Month Cost Comparison
November 2025 - Cost Breakdown by Service
| Service | Cost (USD) | % of Total | Blended vs Unblended |
|---|---|---|---|
| Amazon Elastic Container Service for Kubernetes (EKS) | $128.97 | 46.2% | $128.97 / $128.97 |
| EC2 - Other (EBS, Data Transfer, etc.) | $78.92 | 28.3% | $78.92 / $78.92 |
| Amazon Elastic Compute Cloud - Compute | $44.14 | 15.8% | $44.14 / $44.14 |
| Amazon Virtual Private Cloud (VPC) | $13.80 | 4.9% | $13.80 / $13.80 |
| AmazonCloudWatch | $6.99 | 2.5% | $6.99 / $6.99 |
| AWS Key Management Service | $3.24 | 1.2% | $3.24 / $3.24 |
| AWS Cost Explorer | $1.52 | 0.5% | $1.52 / $1.52 |
| AWS Secrets Manager | $0.97 | 0.3% | $0.97 / $0.97 |
| Amazon EC2 Container Registry (ECR) | $0.68 | 0.2% | $0.68 / $0.68 |
| Amazon Simple Storage Service (S3) | $0.002 | 0.001% | $0.002 / $0.002 |
| Other Services (Minimal Usage) | $0.00 | 0.0% | Free Tier / Minimal |
Data Source: AWS Cost Explorer API with SERVICE dimension grouping
API Call: aws ce get-cost-and-usage --time-period Start=2025-11-01,End=2025-12-01 --granularity MONTHLY --metrics BlendedCost UnblendedCost --group-by Type=DIMENSION,Key=SERVICE
Note: Blended costs account for Reserved Instance and Savings Plan benefits; Unblended costs show actual rates paid
API Call: aws ce get-cost-and-usage --time-period Start=2025-11-01,End=2025-12-01 --granularity MONTHLY --metrics BlendedCost UnblendedCost --group-by Type=DIMENSION,Key=SERVICE
Note: Blended costs account for Reserved Instance and Savings Plan benefits; Unblended costs show actual rates paid
Regional Cost Distribution
| Region | Cost (USD) | % of Total | Status |
|---|---|---|---|
| us-east-1 (N. Virginia) | $279.24 | 100.0% | Active |
| All Other Regions | $0.00 | 0.0% | No Usage |
Data Source: AWS Cost Explorer API with REGION dimension grouping
Analysis: 100% of infrastructure is deployed in us-east-1 region
Analysis: 100% of infrastructure is deployed in us-east-1 region
Key Insights and Recommendations
Cost Drivers Analysis
- EKS Dominates Spending (46.2%): At $128.97/month, EKS cluster costs are the largest expense. This represents the control plane charges ($0.10/hour per cluster = ~$73/month per cluster) plus associated worker node costs.
- EC2 Infrastructure (44.1%): Combined EC2 Compute ($44.14) and EC2 Other ($78.92) represents $123.06 total, indicating substantial compute and storage utilization.
- Networking Costs (4.9%): VPC charges of $13.80 suggest active use of VPC endpoints, NAT Gateways, or data transfer.
- Observability (2.5%): CloudWatch at $6.99 indicates active monitoring with custom metrics and log ingestion.
- Security Services (1.5%): KMS ($3.24) and Secrets Manager ($0.97) show security best practices in place.
Deployment Timeline
- Nov 1-5: Minimal activity ($0.01 - $1.98/day) - likely account setup and initial configuration
- Nov 6: Major deployment begins - costs jump to $16.73
- Nov 7-8: Peak deployment activity - $24.58 and $26.86 respectively
- Nov 9-16: Stabilization period - costs settle around $5.27-5.98/day
- Nov 17-18: Second deployment phase - spike to $10.04 and $12.21
- Nov 19-25: Stable operations - $5.69-8.48/day range
- Nov 26-29: Increased activity - $18.61-19.57/day
- Nov 30: Return to baseline - $13.81/day
Cost Optimization Opportunities
- EKS Cluster Review: Verify if all EKS clusters are necessary. Each cluster costs ~$73/month just for control plane.
- EC2 Instance Optimization: Consider Reserved Instances or Savings Plans if workload is predictable (could save 30-50%).
- Right-sizing Analysis: The variable daily costs ($5-27/day) suggest potential for auto-scaling optimization.
- VPC Endpoint Review: $13.80/month VPC costs warrant review of endpoint usage and data transfer patterns.
- CloudWatch Optimization: Review log retention policies and metric frequency to optimize the $6.99/month spend.
- Cost Explorer Investment: The $1.52 spent on Cost Explorer API calls will pay for itself through the insights gained.