Multi-Cloud Egress Cost Optimizer
Forecast multi-cloud data-transfer bills by combining AWS, Azure, and Google Cloud volumes. Enter outbound terabytes, cache hit rates, committed discounts, and private connectivity savings to estimate billable gigabytes and the blended price per GB after optimizations.
Indicative pricing—verify against your provider rate cards and specific region-to-region paths.
Examples
- 50 TB AWS, 5 TB Azure, 35% cache hits, 10% commit, 15% Direct Connect ⇒ ≈$2,375/month on 31,117 GB billed, blended $0.076/GB
- 15 TB AWS, 8 TB Azure, 12 TB GCP, 70% hits, no private links ⇒ ≈$807/month on 10,752 GB billed, blended $0.075/GB
FAQ
Does this include inter-region surcharges?
Inter-region transfers are approximated in the base rates. For precise modeling, split volumes by route and override rates or discounts for each path.
How do I model tiered pricing?
Enter weighted average rates for each provider or run the calculator per tier (0–150 TB, 150–500 TB, etc.) and sum the subtotals for total spend.
What about Cloudflare R2 or other zero-egress storage?
Treat zero-egress storage as additional cache hit rate or subtract the TB handled by the alternative provider before calculating billable volumes.
Can I compare private connectivity vs. CDN expansion?
Yes—run the model once with higher private-link savings and once with higher cache hit rates to see which investment produces a lower blended $/GB.
Additional Information
- AWS data transfer out to the Internet in North America typically starts near $0.085/GB before tiered discounts and private connectivity breaks.
- ExpressRoute, Direct Connect, and Cloud Interconnect can shave 10%–30% off egress when traffic traverses private links instead of the public Internet.
- CDN and edge caches dramatically cut billable GB—monitor hit ratios continuously and push more content to the edge.
- Revisit assumptions quarterly—provider incentives, tier thresholds, and negotiated discounts change frequently for high-volume customers.