MONTHLY AWS INVOICE ANALYSIS - SEPTEMBER 2024

Account: TechCorp Solutions (Account ID: 123456789012)
Billing Period: September 1-30, 2024
Invoice Date: October 1, 2024
Total Amount Due: $312,448.73
Payment Due: October 31, 2024

INVOICE SUMMARY

Total Charges: $312,448.73
Credits: -$18,240.00 (Reserved Instance unused capacity)
Taxes: $0.00 (Tax-exempt organization)
Previous Balance: $0.00
===============================
Amount Due: $294,208.73

Service Breakdown:
1. Amazon EC2: $142,832.45 (45.7%)
2. Amazon RDS: $68,224.18 (21.8%)
3. Amazon S3: $64,288.92 (20.6%)
4. Data Transfer: $18,432.67 (5.9%)
5. Elastic Load Balancing: $9,248.31 (3.0%)
6. Other Services: $9,422.20 (3.0%)

DETAILED SERVICE CHARGES

1. AMAZON EC2 - $142,832.45

Instance Usage:
- On-Demand Instances: $89,240.12
  * c5.4xlarge (72 instances): $124,416.00
  * r5.2xlarge (24 instances): $28,800.00
  * t3.medium (156 instances): $18,648.00
  
- Reserved Instances: $42,680.00
  * Upfront payment amortization: $28,440.00
  * Hourly charges: $14,240.00
  
- Spot Instances: $10,912.33
  * p3.2xlarge (ML training): $8,440.20
  * c5.large (batch processing): $2,472.13

EBS Volumes:
- General Purpose SSD (gp3): $12,488.40 (4,850 GB)
- Provisioned IOPS SSD (io2): $18,640.22 (2,200 GB, 50,000 IOPS)
- Cold HDD (sc1): $2,842.18 (18,500 GB)
- Snapshots: $4,229.20

Elastic IP Addresses:
- 23 addresses: $167.40 ($0.005/hour/address)

Data Transfer (EC2):
- Regional Data Transfer OUT: $3,840.50

2. AMAZON RDS - $68,224.18

Database Instances:
- Production (db.r5.4xlarge, Multi-AZ): $32,448.00 (8 instances)
- Staging (db.r5.2xlarge): $14,400.00 (4 instances)
- Development (db.t3.large): $8,280.00 (23 instances)

Aurora:
- aurora.r5.2xlarge (2 instances): $9,648.00
- Aurora Storage: $1,224.80 (1,224 GB-months)
- Aurora I/O: $488.18 (488,180 requests)

Backup Storage:
- Automated Backups: $1,428.20 (4,760 GB-months beyond free tier)
- Manual Snapshots: $307.00

3. AMAZON S3 - $64,288.92

Storage Classes:
- Standard Storage: $23,064.00 (342 TB)
- Intelligent-Tiering: $3,584.00 (128 TB)
- Glacier Flexible Retrieval: $1,240.00 (1,240 TB)
- Glacier Deep Archive: $496.00 (496 TB)

Requests:
- PUT/COPY/POST/LIST: $2,428.40 (48,568,000 requests)
- GET/SELECT: $1,644.52 (411,130,000 requests)
- Lifecycle Transition: $88.00 (88,000 objects)

Data Transfer:
- Data Transfer OUT to Internet: $31,744.00 (3,174.4 TB)

4. DATA TRANSFER - $18,432.67

Inter-Region Data Transfer:
- us-east-1 → eu-west-1: $6,248.80 (1,249.76 GB @ $0.005/GB)
- us-west-2 → us-east-1: $3,124.40 (624.88 GB @ $0.005/GB)

CloudFront:
- Data Transfer OUT: $8,240.47 (8.24 TB)
- HTTPS Requests: $819.00 (273M requests)

5. ELASTIC LOAD BALANCING - $9,248.31

Application Load Balancers:
- 47 ALB running hours: $6,768.80 ($0.0225/hour * 47 * 720 hours)
- LCU usage: $2,479.51

6. OTHER SERVICES - $9,422.20

Amazon CloudWatch:
- Metric requests: $428.40
- Logs ingestion: $1,248.20 (2,496 GB)
- Custom metrics: $720.00 (2,400 metrics)

AWS Lambda:
- Requests: $248.80 (12.44M requests)
- Duration: $1,872.40 (1,872.4K GB-seconds)

Amazon Route 53:
- Hosted zones: $600.00 (120 zones @ $0.50/zone)
- Queries: $488.20

VPC:
- NAT Gateway: $1,944.00 (18 gateways @ $0.045/hour)
- NAT Gateway data processing: $1,620.40 (5,401.33 GB @ $0.045/GB)

Amazon ECR:
- Storage: $420.00 (420 GB)

Savings Plans:
- EC2 Compute Savings Plan discount: -$4,240.00
- SageMaker Savings Plan discount: -$880.00

COST ANOMALIES DETECTED

1. ⚠️ S3 Data Transfer Spike: +142% vs August
   - September: $31,744.00
   - August: $13,120.00
   - Difference: +$18,624.00
   - Cause: Unoptimized batch export script transferring 2.8 TB daily

2. ⚠️ RDS Development Instances: +12 new instances
   - 12 new db.t3.large instances created week of Sept 15
   - Total cost: $4,320.00
   - Utilization: <5% average
   - Recommendation: Delete or consolidate

3. ⚠️ EBS io2 Volumes: +38% vs August
   - High IOPS provisioned but low utilization (avg 8,200 IOPS used of 50,000 provisioned)
   - Wasted spend: $12,440.00/month
   - Recommendation: Right-size IOPS to 10,000

MONTH-OVER-MONTH COMPARISON

                August 2024    September 2024   Change
EC2             $128,440.22    $142,832.45      +11.2%
RDS             $62,880.40     $68,224.18       +8.5%
S3              $58,220.18     $64,288.92       +10.4%
Data Transfer   $14,280.40     $18,432.67       +29.1%
ELB             $8,840.20      $9,248.31        +4.6%
Other           $8,628.40      $9,422.20        +9.2%
-----------------------------------------------------------
TOTAL           $281,289.80    $312,448.73      +11.1%

YEAR-TO-DATE SPENDING

Q1 2024 (Jan-Mar): $1,122,600
Q2 2024 (Apr-Jun): $1,190,400
Q3 2024 (Jul-Sep): $1,380,450 (+16.0% vs Q2)

Projected Q4: $1,520,280 (if current trend continues)
Annual forecast: $5,213,730

OPTIMIZATION RECOMMENDATIONS

Immediate Savings (Est. $38,400/month):
1. Delete 12 idle RDS dev instances: -$4,320/month
2. Right-size EBS io2 IOPS: -$12,440/month
3. Fix S3 data transfer script (enable compression, use S3 Transfer Acceleration): -$18,000/month
4. Consolidate 12 underutilized ALBs: -$3,640/month

PAYMENT INFORMATION

Payment Method: ACH Direct Debit
Bank Account: ****6789
Scheduled Debit Date: October 25, 2024

For invoice questions: aws-billing@techcorp-solutions.com
AWS Support: Enterprise Support Plan ($18,624/month, 6% of spend)

This invoice is available in AWS Cost Management console.