AWS Cost Estimation for Stack Resources

Cost Estimation for WIV-CUR Stack Resources

1. S3 Storage (CostAndUsageReportBucket)

• CUR Data Storage:
  • CUR files are typically 1-50 MB per day (varies by account activity)
  • With INTELLIGENT_TIERING storage class
  • Estimated: ~1-2 GB/month = $0.02-0.05/month
• Lifecycle Rules: 365-day retention, query results deleted after 1 day
• Data Transfer: Minimal (same region access)

2. Lambda Functions (4 functions)

• WivCURLambdaFunction: Runs once for CUR creation/deletion
• CleanUpBuckets: Runs only during stack deletion
• AWSCURInitializer: Runs on stack creation and when new CUR files arrive
• AWSS3CURNotification: Runs once for setup
• Estimated cost: < $1/month (minimal invocations)

3. AWS Glue

• Glue Database: No charge for database metadata
• Glue Crawler (AWSCURCrawler):
  • Charges: $0.44 per DPU-hour (1 DPU minimum)
  • Runs when new CUR files arrive (typically daily)
  • Each run: ~2-5 minutes
  • Estimated: 30 runs × 5 min × $0.44/60 = ~$1.10/month

4. Athena

• WorkGroup: No charge for the workgroup itself
• Query costs: $5 per TB scanned
  • CUR data is Parquet format (highly compressed)
  • Depends on query frequency and data volume
  • Estimated for moderate usage: $5-20/month

5. CloudWatch Logs

• Log Groups: 4 log groups with short retention (3-30 days)
• Storage: $0.03 per GB
• Ingestion: $0.50 per GB
• Estimated: < $1/month

6. Cost and Usage Report (CUR)

• CUR Generation: Free
• Delivers detailed billing data to your S3 bucket

7. AWS Support Case

• The template creates a support case for CUR backfill
• Cost depends on your support plan (Developer/Business/Enterprise)

Total Estimated Monthly Cost