Understanding the cost and price of cross-region replication (CRR) in S3 helps buyers budget for data redundancy and disaster recovery. Costs are driven by data transfer between regions, replication requests, and destination storage usage, with regional differences and usage patterns shaping the final bill.
| Item | Low | Average | High | Notes |
|---|---|---|---|---|
| Inter-region data transfer | $0.01/GB | $0.02/GB | $0.08/GB | Depends on region pairs and monthly volume |
| Replication PUT requests | $0.003/1,000 requests | $0.005/1,000 requests | $0.01/1,000 requests | One PUT per replicated object |
| Destination storage (S3 Standard | Included in regular storage | Included in regular storage | Included in regular storage | CRR copies into destination bucket |
| Lifecycle and other transfer costs | $0.00 | $0.00 | $0.01/GB | When mixed with lifecycle transitions |
| Data transfer within same account (Cross-region transfer between buckets) | $0.00 | $0.01/GB | $0.03/GB | Depends on account and region |
Overview Of Costs
Cost ranges reflect typical CRR usage for S3 buckets in widely used US region pairs. The total price includes inter-region data transfer, replication PUT requests, and ongoing storage costs in the destination bucket. Assumptions: baseline Standard storage, no additional data transfer beyond replication, and modest monthly data volume. Data transfer pricing varies by source and destination regions; higher volumes often attract volume discounts from AWS. Assumptions: region, specs, labor hours.
Price At A Glance
Inter-region transfer commonly governs the price, followed by replication request counts. For example, replicating 500 GB to another region might cost roughly $10–$40 monthly for data transfer, plus a small amount for PUT requests, depending on the frequency and object count. Storage in the destination bucket is billed at the regular S3 rate and is not unique to CRR.
Cost Breakdown
The cost breakdown below uses a table with primary components and typical ranges. The exact amounts depend on data volume, object churn, and target region pairs.
| Component | Low | Average | High | Notes |
|---|---|---|---|---|
| Materials | $0.00 | $0.00 | $0.00 | CRR uses AWS infrastructure; no material costs. |
| Labor | $0.00 | $0.00 | $0.00 | No labor charges from AWS; operation costs pass to you via usage. |
| Equipment | $0.00 | $0.00 | $0.00 | Included in cloud service pricing. |
| Permits | $0.00 | $0.00 | $0.00 | Not applicable. |
| Delivery/Disposal | $0.00 | $0.00 | $0.00 | Not applicable; data moves within cloud. |
| Warranty | $0.00 | $0.00 | $0.00 | Included via service terms. |
| Taxes | $0.00 | $0.00 | $0.00 | Depends on jurisdiction and usage. |
| Overhead | $0.00 | $0.00 | $0.00 | Implicit in service pricing. |
| Taxes | $0.00 | $0.00 | $0.00 | Assessed by AWS; varies by state. |
| Contingency | $0.00 | $0.00 | $0.00 | Unlikely for standard CRR; budget small extra. |
What Drives Price
Inter-region data transfer costs are the primary driver for CRR. The chosen source/destination region pair heavily influences rates, with legacy pairs often priced differently than newer regions. A second major factor is the number of replicated PUT requests; objects require a PUT operation in the destination bucket to complete replication. Regional scaling and data churn add further variability, especially for buckets with frequent object updates.
Regional Price Differences
Prices vary across US regions and are affected by the destination region’s pricing tier. For example, replication between US East (N. Virginia) and US West (Oregon) may differ from replication to US GovCloud or other regions. In practice, expect a delta of roughly ±20% between common US region pairs at typical data volumes. The exact inter-region transfer price is published by AWS and fluctuates with regional pricing changes.
Factors That Affect Price
Object count and churn directly affect PUT request totals; a high-rate ingestion environment increases replication operations and invoices for PUT requests. data-formula=”data_transfer_gb × price_per_gb”> Data transfer goes up with the volume moved between regions, and higher-volume customers may negotiate volume discounts or use transfer optimization features. S3 CRR also incurs storage costs in the destination bucket, which accumulate over time and depend on the chosen storage class.
Ways To Save
To manageCRR costs, consider limiting replication to essential prefixes or objects and using replication time windows. Consolidate data where feasible to reduce the number of objects copied. Use less expensive storage classes in the destination if immediate access is not required, and monitor region pair usage to identify cost-saving opportunities. Schedule replications to off-peak periods where possible to reduce peak transfer bills, and analyze whether cross-region replication is needed for all data or only critical items.
Real-World Pricing Examples
Scenario A — Basic replication: 100 GB replicated from US East to US West, 2,000 PUT requests, standard storage in destination. Inter-region transfer: 100 GB × $0.02/GB = $2.00. PUT requests: 2,000 × $0.005/1,000 = $0.01. Destination storage: standard storage cost applies. Total estimate: about $2–$3 monthly, plus storage fees. Assumptions: region, specs, labor hours.
Scenario B — Medium workload: 1 TB replicated monthly across two region pairs, 25,000 PUT requests, Standard storage in destination. Inter-region transfer: 1000 GB × $0.02/GB = $20. PUT requests: 25,000 × $0.005/1,000 = $0.125. Storage: ongoing monthly storage at destination. Total: roughly $20–$25 plus storage costs. Assumptions: region, specs, labor hours.
Scenario C — High-volume, complex: 5 TB monthly across three region pairs, 150,000 PUT requests, frequent updates. Inter-region transfer: 5,000 GB × $0.02/GB = $100. PUT requests: 150,000 × $0.005/1,000 = $0.75. Storage: ongoing. Total: approximately $100–$120 plus storage costs. Assumptions: region, specs, labor hours.
Pricing FAQ
How is cross-region replication billed for S3? Billing is per-GB data transfer between regions, per-1,000 PUT requests, and destination storage. Taxes and regional variations apply, and some transfer scenarios may incur additional fees. A common nuance is that data transfer within the same AWS account remains subject to standard inter-region rates, while data transfer to certain regions or services may follow different rules.
Assumptions: region, specs, labor hours.