An 80% smaller AWS bill,no release delayed.
Terraform removed drift. Right-sizing, Lambda migrations, scaling, and off-hours shutdown removed waste without freezing product work.
The AWS bill was structural waste, not product demand.
Over-provisioned EC2 and RDS capacity, manually managed networking, infrastructure drift, and non-production environments running around the clock made every month more expensive.
Put the infrastructure under control, then remove waste in place.
Codify the foundation
Terraform brought infrastructure under version control, including VPCs and route tables, so changes stopped drifting.
Change the cost shape
EC2 and RDS were right-sized, selected EC2 workloads moved to Lambda, RDS was rescaled, auto-scaling was introduced, and non-production shut down outside working hours.
Reduce cost without creating a delivery freeze.
- Terraform and explicit networks over ad hoc console changes.
- Right-size before buying more capacity.
- Move suitable workloads from EC2 to Lambda instead of treating every workload the same.
- Schedule non-production shutdown rather than paying for idle hours.
The bill fell 80% in weeks. Delivery did not stop.
Monthly AWS spend fell 80%, with zero release delays and zero incidents during the transition.
The infrastructure became cheaper to change. The legacy refactor everyone avoided came next.