AWS migration costs range from $50K for small workloads to $10M+ for enterprise. This calculator shows the full number — including what AWS won't tell you.
Independent · No lead forms · Updated 2026
Total Project Cost Estimate
Monthly Cloud Cost
$60K
post-migration
Break-Even
86 mo
from go-live
Monthly Savings
+$20K
vs on-premise
Data Egress Cost
$2K
one-time transfer
Cost Breakdown
Estimates based on 2026 market rates. Actual costs vary by workload complexity, geographic region, and negotiated contract terms. Add 20–40% contingency for hidden costs.
Top Cost Drivers for This Scenario
1. Migration labour ($1.4M) · 2. Parallel running ($1.4M) · 3. Egress costs ($2K)
AWS Cost Components
AWS Application Migration Service (MGN)
Free (first 90 days per server)AWS MGN automates lift-and-shift replication. After the 90-day free period, fees apply — but most migrations complete cutover within this window.
AWS DataSync (large data transfers)
$0.0125/GB transferredFor migrations with more than 10TB of data, AWS DataSync is more reliable than manual S3 uploads. A 50TB migration costs ~$640 in DataSync fees.
Data Egress to AWS
$0.09/GB first 10TB ($92/TB)Moving data INTO AWS from on-premise via internet costs $0.09/GB for the first 10TB. AWS Snowball eliminates this for large datasets.
EC2 — On-Demand vs Reserved
Reserved saves 30–60% vs on-demandOn-demand EC2 pricing is expensive. 1-year reserved instances typically save 38–40%. 3-year reserved saves 55–60%. Commit to reserved early to reduce post-migration monthly costs.
AWS Enterprise Support
10% of monthly AWS spendEnterprise Support is $15,000/month minimum. Business Support is 10% of monthly spend ($100/month minimum). Factor this into your monthly cost estimate.
AWS Professional Services
$250–$350/hourAWS's own consulting arm. Premier Partner rates run $150–$250/hour. Typical engagement sizes for 100-server migrations: $150,000–$300,000.
Egress Cost Reference
| Data Volume | Rate / GB | Total Cost |
|---|---|---|
| 1 TB | $0.09 | $92 |
| 5 TB | $0.09 | $461 |
| 10 TB | $0.09 | $922 |
| 20 TB | $0.085 | $2K |
| 50 TB | $0.085 | $4K |
| 100 TB | $0.07 | $7K |
| 200 TB | $0.05 | $10K |
MAP provides AWS credits, tools, and partner support for qualifying migrations. This can reduce your AWS consumption costs during migration by 25–100%.
Hidden Costs
The AWS Pricing Calculator models post-migration costs only. The 6–18 months you run both environments simultaneously is not included. Typical cost: $50K–$300K depending on estate size.
AWS certification costs $300–$400 per exam. Training time is 2–4 weeks per engineer. For a 10-person team: $10,000–$50,000 in training costs alone.
Apps that run cleanly on-premise often need significant rework for AWS networking, secrets management, logging, and IAM. Not modelled in any AWS tool.
Revenue-at-risk during the cutover window. For an e-commerce site doing $1M/month, a 4-hour cutover window risks $55,000 in lost revenue.
Windows SQL Server on EC2 requires BYOL. Oracle on EC2 uses Oracle's complex cloud licensing rules — often 2–3× more expensive than on-premise. Factor this before migrating any Oracle workload.
AWS FAQ
MigrationCost.com is not affiliated with Amazon Web Services. All estimates are for budgeting guidance only. AWS pricing is subject to change — verify current rates at aws.amazon.com/pricing.