cost-savings

Batch Job Cost Optimisation

Shrink nightly ETL windows and reduce spot instance spend.

Published May 30, 2026

Nightly ETL

A 6-hour batch job on 10 c5.2xlarge instances costs $12/night. With 4x speedup, run on 3 instances for $3.60/night.

Shorter jobs tolerate higher spot interruption rates. Use cheaper spot instances.

Finish before business hours to avoid peak-rate compute.

$12/night * 365 = $4,380/year
$3.60/night * 365 = $1,314/year
Savings: $3,066/year per pipeline