🏢 RenewBuy AWS Cost Optimization Report

Analysis Period: July 2025 | Total Monthly Cost: $15,692.59

📊 Executive Summary

This comprehensive cost analysis reveals significant optimization opportunities across your AWS infrastructure. The total monthly spend of $15,692.59 can be reduced by an estimated $4,000-6,000 per month (25-40%) through strategic optimizations.

💰 Immediate Savings Potential: $4,000-6,000/month

MongoDB Atlas Migration: $2,000-2,500/month savings
EC2 Reserved Instances: $800-1,200/month savings
Data Transfer Optimization: $500-800/month savings
S3 Intelligent Tiering: $200-400/month savings

💸 Cost Breakdown by Service

MongoDB Atlas (Marketplace)

$4,130.00

26.3% of total cost

Optimization Potential: HIGH

4,130 credits used in US East (N. Virginia)

Recommendation: Migrate to Amazon DocumentDB for 50-60% cost reduction

Amazon EC2

$3,191.22

20.3% of total cost

Optimization Potential: MEDIUM

~25,000 instance hours across Mumbai and Hyderabad

Recommendation: Implement Reserved Instances and right-sizing

Amazon RDS

$2,834.03

18.1% of total cost

Optimization Potential: LOW

Already using Reserved Instances effectively

Recommendation: Monitor and optimize storage allocation

Data Transfer

$1,623.49

10.3% of total cost

Optimization Potential: HIGH

~18,000 GB transferred across regions

Recommendation: Implement CloudFront caching and VPC endpoints

Amazon S3

$842.86

5.4% of total cost

Optimization Potential: MEDIUM

~30,000 GB-months storage with 3.2M requests

Recommendation: Enable Intelligent Tiering and lifecycle policies

Amazon CloudFront

$729.07

4.6% of total cost

Optimization Potential: LOW

Global CDN with 6,000 GB transfer and 7M requests

Recommendation: Already optimized for global delivery

📈 Cost Distribution

MongoDB Atlas

26.3%

$4,130

EC2

20.3%

$3,191

RDS

18.1%

$2,834

Data Transfer

10.3%

$1,623

Other Services

24.9%

$3,914

🎯 Detailed Optimization Recommendations

🚀 Immediate Actions (0-30 days)

Action	Potential Savings	Implementation Effort	Risk Level
Replace MongoDB Atlas with Amazon DocumentDB	$2,000-2,500/month	Medium	Medium
Implement EC2 Reserved Instances	$800-1,200/month	Low	Low
Enable S3 Intelligent Tiering	$200-400/month	Low	Low
Optimize data transfer with CloudFront	$500-800/month	Medium	Low
Right-size EC2 instances	$300-600/month	Medium	Medium

📅 Medium-term Actions (1-6 months)

Implement Savings Plans: Additional 10-15% savings on compute costs
Migrate to Graviton-based instances: 20% better price performance
Consolidate RDS instances: Optimize storage allocation and reduce overhead
Implement VPC endpoints: Reduce data transfer costs significantly
Use Spot Instances: Up to 90% savings for non-critical workloads

🔮 Long-term Strategy (6+ months)

Multi-region architecture optimization: Reduce cross-region transfer costs
Comprehensive monitoring and auto-scaling: Dynamic resource optimization
Serverless alternatives evaluation: Cost-effective for variable workloads
Regular cost optimization reviews: Continuous improvement process
AWS Enterprise Support: Additional cost optimization guidance

📊 Service-Specific Analysis

MongoDB Atlas (Marketplace) - $4,130/month

Current Usage: 4,130 credits at $1.00 per credit

Optimization Strategy:

Amazon DocumentDB: Fully managed MongoDB-compatible service with 50-60% cost reduction
Self-managed MongoDB on EC2: Even greater savings but requires operational overhead
Migration Timeline: 4-6 weeks with proper planning

Amazon EC2 - $3,191/month

Current Usage: Mixed instance types (t3a.small to c6a.xlarge) across Mumbai and Hyderabad

Optimization Strategy:

Reserved Instances: 1-year term can save 30-40%, 3-year term saves 50-60%
Right-sizing: Analyze CloudWatch metrics to identify oversized instances
Graviton Migration: ARM-based instances offer 20% better price performance

Data Transfer - $1,623/month

Current Usage: ~18,000 GB transferred with high inter-region costs

Optimization Strategy:

CloudFront Caching: Reduce origin requests by 70-80%
VPC Endpoints: Eliminate internet gateway charges for AWS services
Regional Consolidation: Minimize cross-region data movement

🎯 Implementation Roadmap

Phase	Timeline	Actions	Expected Savings
Phase 1	0-30 days	Reserved Instances, S3 Intelligent Tiering, Basic right-sizing	$1,000-1,500/month
Phase 2	1-3 months	MongoDB to DocumentDB migration, CloudFront optimization	$2,500-3,000/month
Phase 3	3-6 months	Savings Plans, Graviton migration, VPC endpoints	$500-1,000/month

📋 Key Assumptions & Limitations

All costs based on July 2025 billing period
Standard ON DEMAND pricing model used for analysis
Current usage patterns assumed to continue
Regional pricing differences accounted for (Mumbai vs other regions)
Excludes one-time migration costs, training, and third-party licensing

🎉 Conclusion

By implementing the recommended optimizations, RenewBuy can achieve significant cost savings while maintaining or improving performance:

Total Potential Savings: $4,000-6,000 per month (25-40% reduction)
Annual Savings: $48,000-72,000
ROI Timeline: Most optimizations pay for themselves within 1-3 months

Next Steps: Prioritize immediate actions with low risk and high impact, starting with Reserved Instances and S3 Intelligent Tiering.

Report generated on:
AWS Cost Optimization Analysis | RenewBuy Infrastructure Team