Rehosting, replatforming, and refactoring each take a different approach to cloud migration. Here's a plain-English breakdown of how they work, what they cost, and how to pick the right one for your business.
Published
March 7, 2026
Moving to the cloud means making one big decision upfront: how much do you want to change? Rehosting moves everything as-is. Refactoring rebuilds for the cloud. Replatforming lands somewhere in between. Here's what each actually means and how to pick the right one for your business.
Cloud migration is the process of moving your data, applications, and infrastructure from on-premises servers to a cloud environment — or from one cloud to another. For most businesses, the goal is the same: stop managing physical hardware, reduce costs, and build a technology foundation that scales with the company.
In 2026, cloud migration is no longer a question of if — it's a question of how. The three most common approaches are rehosting, replatforming, and refactoring. Each comes with different tradeoffs in cost, time, and long-term payoff.
Rehosting moves your applications to the cloud exactly as they are — no code changes, no architectural redesign. You pick up your software and drop it into a cloud environment.
It's the fastest and least expensive migration method. For organizations under pressure to exit a data center quickly or reduce on-premises infrastructure costs, rehosting gets you there with minimal disruption.
The tradeoff: you don't get the full benefit of cloud-native features. You're in the cloud, but you're not built for it. Rehosting is often a first step, not a final destination.
Best for: Organizations with a hard deadline, tight budget, or applications that don't need optimization.
Replatforming makes targeted changes to your applications during the migration — enough to take advantage of cloud capabilities without a full rebuild. You might swap out a database for a managed cloud service, or move to a containerized deployment, while leaving the core application logic intact.
The result is better performance and efficiency than a straight lift-and-shift, without the time and cost of a complete re-architecture. It's the middle-ground option — and often the right one for businesses that need cloud benefits now but aren't ready to invest in a full transformation.
Best for: Applications that need some optimization but not a complete overhaul. Organizations that want cloud advantages without a major development investment.
Refactoring is the most significant of the three. It means rebuilding your applications to be cloud-native — designed from the ground up to take advantage of microservices, serverless computing, and managed cloud services.
It takes the most time and costs the most upfront. But it produces applications that are more scalable, more resilient, and easier to maintain long-term. For applications that are strategic to the business and expected to grow, refactoring is the right investment.
Best for: Applications with high strategic value, significant scalability requirements, or codebases that have become too complex to maintain efficiently.
There's no universal answer — and most organizations use a combination of all three. A common approach is to rehost most applications to get off-premises quickly, replatform the ones that need optimization, and refactor only the applications that are most critical to the business.
The questions to work through before you start:
Cloud migration projects go sideways when the strategy doesn't match the business. The wrong approach for the wrong application wastes time, blows budgets, and creates technical debt you'll spend years unwinding.
Velo IT Group helps businesses across Dallas, Houston, and DFW evaluate their options and execute migrations without the drama. If you're planning a move to the cloud in 2026, let's talk before you start.
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