Cloud Migration Cost in 2026: What Moving to the Cloud Really Costs
Cloud migration costs $10,000 to $50,000 for a small business rehosting a handful of workloads, $50,000 to $150,000 for a mid-scale migration with replatforming, and $150,000 to $500,000 or more when large systems need refactoring for the cloud. The spread is that wide because "migration" covers everything from copying a server to rebuilding your application architecture. This guide breaks down where the money goes, the hidden costs the calculators skip, and how to keep the bill under control.
Cloud migration cost at a glance
| Migration scale | Typical approach | Cost range |
|---|---|---|
| Small (a few workloads, simple data) | Rehost (lift and shift) | $10,000 to $50,000 |
| Mid-scale (multiple systems, some rework) | Replatform + partial refactor | $50,000 to $150,000 |
| Large / complex (legacy estate, compliance) | Refactor to cloud-native | $150,000 to $500,000+ |
Two budgets matter, not one: the migration project above, and the ongoing monthly cloud spend that replaces your on-premise costs afterward. Confusing them is the most common cloud budgeting mistake.
What is cloud migration?
Cloud migration moves your services, applications, databases, and IT resources from on-premise infrastructure to cloud platforms like AWS, Azure, or Google Cloud. Done well, it buys effortless scaling, minimal downtime, and access to managed services (including AI/ML capabilities) that on-premise hardware cannot match. Done badly, it moves your problems somewhere more expensive. The difference is strategy, which is why we maintain a full companion guide to choosing your cloud migration strategy.
The migration process, phase by phase
| Phase | Typical duration | What happens |
|---|---|---|
| Conceptualization | 1 to 2 weeks | Goals, scope, dependency mapping |
| Strategy selection | 1 to 2 weeks | Pick rehost / replatform / refactor per workload |
| Deployment model | 3 to 5 days | Single cloud, multi-cloud, or hybrid |
| Platform choice | 2 to 8 weeks | AWS vs Azure vs GCP, proof of concept |
| Planning and design | 3 to 4 weeks | Architecture, resources, risk plan, KPIs, schedule |
| Migration execution | 4 to 22 weeks | Environment build, continuous data sync, workload moves |
| Testing and optimization | 1 to 8 weeks | Performance, penetration, and compliance testing |
| Cutover | 2 to 4 weeks | The switch from on-premise to cloud |
The duration spread in execution (4 to 22 weeks) is your complexity showing: a few stateless services move in a month; a legacy estate with tangled dependencies does not.
The strategies, and what they do to your budget
AWS's framework lists seven options (retire, retain, relocate, rehost, repurchase, replatform, refactor), but four do most of the work:
- Rehost (lift and shift): move workloads to cloud infrastructure unchanged. Cheapest and fastest upfront, but carries your inefficiencies with it, so running costs stay high.
- Replatform (lift, tinker, and shift): move with targeted optimizations, no architecture change. The pragmatic middle: better performance and fault tolerance for moderate effort.
- Refactor (re-architect): rebuild workloads cloud-native. The most expensive upfront and the cheapest to run, with the full benefit of cloud scalability.
- Repurchase (drop and shop): replace the system with a SaaS product. Quick and low-risk where a good SaaS equivalent exists.
The upfront-versus-running-cost trade is the entire decision: rehosting minimizes the migration invoice, refactoring minimizes the next five years of cloud bills.
What actually drives the cost
- Data transfer. Volume times bandwidth, priced differently by provider. Large datasets take time and money to move.
- Infrastructure setup. Networking, storage, security, and compute for the new environment.
- Application refactoring. The big line item: apps that need rework (or rebuilding) to run well in the cloud. Complexity here swings budgets more than any other factor.
- Post-migration operations. Monitoring, managed services, optimization, and the ongoing cloud bill itself.
- Provider choice. AWS, Azure, and GCP price storage, egress, and instances differently; discounts and commitments matter at scale.
The hidden costs migration calculators skip
- On-premise integrations. Systems staying behind still need to talk to the cloud: middleware, APIs, or custom connectors are development work.
- Downtime. Some disruption during cutover is normal; its business cost belongs in the budget, not in the surprise column.
- Service overlap. You will run on-premise and cloud in parallel during migration (and for rollback safety), paying for both. Plan for months, not days.
- Training and change management. New tooling, new workflows, documentation, and a temporary productivity dip while teams adjust.
How to control cloud migration costs
- Assess before you move. A thorough inventory of workloads and dependencies is what makes the budget real and surfaces the hurdles early.
- Adopt FinOps from day one. Continuous analysis of cloud usage against spend catches waste while it is small; it is the discipline that keeps the post-migration bill from creeping.
- Right-size, then commit. Start with conservative resources, measure, then use reserved instances and committed-use discounts once usage patterns are proven.
- Pick the migration partner on track record. An experienced team has made the expensive mistakes on someone else's project already. Our cloud services team runs migrations end to end, and the same cost discipline applies whether you build in the cloud or move to it, as our guide to software development cost breakdowns shows on the build side.
Is it worth it? The ROI case
Direct savings come from retired hardware, lower IT maintenance, and reduced energy spend. The larger, indirect savings come from faster deployments, less downtime, elastic scaling that matches spend to demand, and speed to market for new products. The upfront cost is real; for most growing businesses the crossover arrives within one to three years, and the flexibility compounds after that.
Frequently asked questions
How much does cloud migration cost?
From $10,000 to $50,000 for small rehosting projects to $150,000 to $500,000+ for complex refactoring migrations. The strategy you choose per workload (rehost, replatform, or refactor) is the biggest single cost decision.
What is the cheapest way to migrate to the cloud?
Rehosting (lift and shift) minimizes the upfront project cost. The catch: it carries your existing inefficiencies into an environment that bills by usage, so it is often the most expensive option over five years.
How long does cloud migration take?
Small migrations complete in 2 to 3 months end to end. Mid-scale projects run 4 to 8 months, and large legacy estates can take a year, with the execution phase alone spanning 4 to 22 weeks.
The bottom line
Cloud migration costs are a strategy decision wearing a price tag: rehost cheap and pay monthly, or refactor once and run lean. Budget the project and the ongoing spend separately, put the hidden lines (overlap, integrations, training) in the plan up front, and let workload assessment, not optimism, set the schedule. When you want real numbers on your estate, our cloud engineers will map it with you.
Migrations planned like engineering, not gambling
Coding Crafts scopes your workloads, picks the right migration strategy per system, and executes with senior cloud engineers at $25 to $49 per hour, with rollback plans at every step.
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