We are publishing the AWS costs incurred while operating SwiTra. This record uses the final amounts on the invoices issued from April through June 2026.
Three months of AWS invoices
| Billing month | AWS cost |
|---|---|
| April 2026 | $543.74 |
| May 2026 | $344.45 |
| June 2026 | $345.97 |
| Total | $1,234.16 |
The three-month average was $411.39 per month.
Month-to-month changes
The May invoice was $199.29 lower than April. June then increased by $1.52 from May, remaining at nearly the same level.
- April → May: -$199.29 (-36.7%)
- May → June: +$1.52 (+0.4%)
Adjusting the ECS container specifications
After reviewing the April invoice, we refined the specifications for the exchange data collection and data processing servers to a stable operating range, then optimized the ECS container configuration.
We had mostly used t4g instances until then, but this process also led us to run r7g instances. By reviewing the role and actual resource requirements of each server, we reduced the May cost by 36.7% compared with April and maintained a similar level in June.