Transfer General · Cost calculators

What cross-cloud data transfer actually costs — before and after you build it.

Four models. Your numbers. No product pitch — these calculators stand on their own. Adjust the inputs; the math is visible and the assumptions are documented.

Model 01

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Egress waste / year

Model 02

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Maintenance labor / year

Model 03

—

Audit evidence labor / year

Model 04

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Initial build + 3-year TCO

Model 01 / 04

Build cost

Initial build cost — DIY transfer pipeline

Building a cross-cloud transfer pipeline with object-layer encryption, integrity verification, and audit evidence. This calculator estimates the engineering investment — including the things teams routinely de-scope.

Assumption

160 hr / eng-month

Scope

Build + annual maintenance + annual audit labor

Output

3-year TCO estimate

Complexity spike: Moving from 2 clouds to 3 triples the integration surface — 3 cloud pairs instead of 1. Three IAM models, three SDK integrations, three failure modes.

Your environmentBuild assumptions

Senior engineer hourly rate

$175/hr

Number of clouds

2 clouds

Regulated deployment

Adds FIPS-validation engineering overhead.

Cloud pairs

2 clouds = 1 pair · 3 clouds = 3 pairs.

Initial build

—

Annual maintenance

—

Annual audit labor

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3-year TCO

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Build components

Cloud-pair integration—

Object-layer encryption—

KMS integration—

FIPS validation work—

Total initial build—

Planning signal

—

Approximate senior-engineer delivery time at 8 hrs/day. Does not include procurement, security review, cross-team coordination, or change-management drag.

3-year TCO math

Initial build—

Year 1 maintenance—

Year 2 maintenance—

Year 3 maintenance—

Annual audit labor—

3-year total—

Model 02 / 04

Maintenance labor

Monthly maintenance — steady-state pipeline labor

Once the pipeline exists, teams still carry ongoing engineering cost: SDK drift, cert rotation, failure-handling upkeep, research across CSP changes, and recurring validation for regulated deployments.

Base model

Five recurring maintenance categories

Multiplier

2 clouds = 1.6× · 3 clouds = 2.5×

Output

Annual maintenance labor

Your environmentOngoing platform burden

Senior engineer hourly rate

$175/hr

Number of clouds

2 clouds

Multiplier

1.6×

Automatically updates with cloud count.

Mode

Steady state

Excludes production incident-response spikes.

Monthly maintenance hrs

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Monthly labor cost

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Annual labor cost

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Cloud multiplier

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Monthly category breakdown

SDK / API drift—

Certificate / signing upkeep—

Failure-mode handling—

CSP change research—

Recurring validation (regulated)—

Total monthly (after CSP multiplier)—

Base monthly hours reflect steady-state operations on a working pipeline. Figures exclude initial build, incident response for production outages, and cross-team coordination overhead.

Model 03 / 04

Compliance cost

Audit evidence compliance cost labor

When an auditor asks for proof that a specific object moved intact between clouds, someone must reconstruct what happened — identifying object versions, reconciling partial transfers, validating integrity across disconnected CSP audit trails, and assembling it into evidence an auditor will accept.

Scope

Scheduled + ad hoc

Source

CSP audit trails

Output

Auditor evidence

Your environmentCompliance cadence & incident load

Senior engineer hourly rate

$175/hr

Scheduled audit cycles / year

Hours per scheduled cycle

80 hrs

Ad hoc requests / year

Assumes 8 hrs average per ad hoc request.

Scheduled audit labor

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Ad hoc labor

—

Total annual labor

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Evidence mode

Manual

Evidence assembly math

Scheduled cycles × hours—

× engineer rate—

= scheduled audit cost—

Ad hoc requests × 8 hrs avg.—

× engineer rate—

= ad hoc cost—

= total annual evidence labor—

This model covers labor only — the engineering time spent reconstructing transfer evidence. It does not include the cost of audit findings, remediation, delayed certifications, or regulatory penalties.

Model 04 / 04

Egress cost

Egress waste from failed transfers

When a cross-cloud transfer fails mid-stream, the data already moved is billed at egress rates — and must be re-transferred from scratch. This calculator estimates the annual cost of that wasted egress.

Egress rate

$0.087 / GB

Basis

AWS · standard

Assumptions

Midpoint failure

Your environmentAdjust to match your pipeline

Monthly transfer volume

50 TB

Average object size

10 GB

Object failure rate

Percentage of objects that fail and require full retransmit.

Avg. progress at failure

50%

How far through the transfer before failure.

Failed objects / month

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Wasted data / failure

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Monthly wasted egress

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Annual wasted egress

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Waste calculation

Average object size—

Failure rate—

Progress at failure—

Wasted data / failure—

Failed objects / month—

Wasted GB / month—

Egress rate—

Annual wasted egress—