If your business still runs on a physical server in the office, or on a hard drive someone has to remember to back up, you've probably weighed cloud migration. The real question is rarely whether it's worth it — it's what it costs and what actually changes the day after. Here's a look at the real benefits of moving your infrastructure to the cloud, what drives the price, and what cloud migration costs across the US, UK and EU, region by region.
What is cloud migration?
Cloud migration means moving your servers, applications, data or backups off physical machines your company owns — in the office or in a data centre — onto a cloud provider's infrastructure, such as AWS, Microsoft Azure or Google Cloud. Instead of owning the machines, you rent capacity and access it over the internet, paying for what you actually use.
Not everything migrates the same way. There are two main approaches:
- Lift and shift: you move the application or system as it is, without rewriting it. It's faster and cheaper, but doesn't always make the most of what the cloud offers.
- Refactoring: you redesign the system to be cloud-native, taking advantage of its scalability and managed services. It costs more upfront, but usually pays off long-term if the system is going to run for years.
Why small businesses are leaving the local server behind
A physical server ages like any other piece of hardware: it runs out of capacity, parts fail, and replacing it means buying new equipment upfront. If a drive fails, or there's a theft, a fire or a simple power surge, recovery depends entirely on the last backup being sound and stored somewhere other than that same room.
On top of that, scaling up on-premise isn't instant: you have to get a quote, wait for delivery, install it and configure it. In the cloud, the same change happens in minutes, from a control panel, with nobody heading to a server closet with a screwdriver.
The real benefits of cloud migration
These are the benefits that actually show up in a business's day-to-day, beyond the providers' sales pitch.
Cost savings: from buying hardware to paying for usage
The underlying difference is accounting: buying a server is a capital investment that depreciates over the years whether you use it fully or not. Paying for the cloud is a variable cost that rises and falls with actual usage. If a campaign or an order spike means you need more power one month, you pay for that month; once it drops, you stop paying for it. With your own server, that spare capacity was billed to you either way.
Scalability: grow or shrink without construction work
Adding storage, memory or compute power is a matter of minutes, not weeks. This matters most if your business has seasonal spikes — sales periods, campaigns, peak season — since you can scale up right before and back down after, instead of paying year-round for capacity you only need for a few weeks.
Security and automatic backups
Large providers encrypt data in transit and at rest, watch for suspicious access around the clock, and replicate information across multiple data centres. Key idea: that doesn't remove your responsibility. Cloud security is shared between the provider, who secures the infrastructure, and you, who has to configure permissions and passwords correctly. A folder left open to the public is still your mistake, no matter where it's hosted.
Remote work and real-time collaboration
With files and applications in the cloud, anyone authorised can access them from wherever they are, with a connection and the right permissions. Several people can work on the same document or system at once, without emailing versions back and forth or overwriting each other's changes.
Business continuity after failures or disasters
If a local server breaks, your business stops until it's repaired or replaced. In the cloud, data is usually replicated across multiple zones, so a failure in one data centre doesn't have to take your service down. Recovering a system from the cloud after an incident is generally a matter of hours, not days.
What drives the price of a cloud migration
There's no single figure, because the cost depends on several decisions, not just on company size:
- Lift and shift or refactoring. Moving a system as-is is cheaper upfront than redesigning it to be cloud-native.
- Data volume. The more terabytes you need to move, the more transfer time, engineering hours, and — at large volumes — specialised data-migration tools it takes.
- How many systems are connected to each other. A standalone website moves on its own; an ERP linked to accounting, warehouse and website means coordinating several pieces at once.
- Industry regulation. Healthcare, finance or any sector handling sensitive data needs extra configuration and audits that don't apply to a business without those requirements.
- Who does the work. A freelancer, a specialised agency and an in-house team all have different cost structures, and it shows in the final budget.
What cloud migration costs, region by region
Prices vary quite a bit from one market to another, so they're broken down by region and in each region's own currency, not converted:
| Project type | Spain / EU | UK & Ireland | US / Canada |
|---|---|---|---|
| Small business, simple setup (lift and shift) | €3,000-8,000 | £2,500-8,500 | $3,000-15,000 |
| More systems or higher data volume | €60,000-200,000+ | £15,000-50,000 | $50,000-250,000 |
On top of the migration project itself comes the recurring cost of running on the cloud (storage, compute, data transfer), which varies so much by volume that a fixed figure wouldn't mean much — it's calculated case by case with the chosen provider.
Worth knowing before you set a budget: according to industry figures, a significant share of migration projects end up costing well over the initial budget when they aren't planned properly. The cloud itself isn't expensive — a badly designed migration is.
If you're in Spain, part of the investment may qualify for the Kit Digital grant, under the process-management or cybersecurity categories, depending on the current call and business size. If you're elsewhere, it's worth checking whether your government runs an equivalent SME digitalisation scheme — several do.
What happens when a migration is done badly
Almost every cloud migration problem starts in the same place: doing it without a plan, in a rush, or all at once.
- The budget blows up. Without an upfront review of what's actually running, forgotten systems surface halfway through the project, and every surprise adds hours nobody budgeted for.
- The service goes down during the switch. Migrating everything at once, without a period where the old and new systems run side by side, leaves the business without systems while the first bugs get sorted out.
- Data gets lost. If the backup isn't verified before the old system is switched off, a failure during migration can leave gaps that never get recovered.
- Two systems stay live forever. A half-finished migration, where part of the business stays on-premise «just in case», ends up costing double: both infrastructures have to be maintained at once.
- Doors get left open. Cloud storage misconfigured as public is one of the most common security failures out there, and it isn't the provider's fault — it's a configuration mistake.
What a solid migration process includes
- Audit the current state: which systems exist, which are actually used, and which can be retired before anything gets moved.
- Choose the migration type for each system: lift and shift where it's enough, refactoring where it pays off.
- Plan it in phases, starting with the least critical systems, not everything at once.
- Take a full, verified backup before touching the original system.
- Run both infrastructures side by side for a while, until everything is confirmed to work as well or better.
- Verify and decommission the old system, only once the new one has proven stable.
By business stage
There's no single right answer, and anyone who gives you one without asking where your business actually stands isn't advising you — they're selling to you.
- Just starting out, or running a simple setup? Moving email, files and little else to already-configured services is usually enough, without a complex migration project behind it. It's the fast, cheap way to stop depending on a single hard drive.
- Already generating revenue with your own systems (ERP, CRM, custom applications)? Migration needs phased planning and, almost always, help from someone who's done it before. Skipping the upfront audit here almost always ends up costing more.
How we approach it at Cruslar
Before moving anything, we start with the same thing we recommend in this article: auditing what's actually running and what's actually used. We don't propose a full migration to someone who just needs to stop depending on a shared hard drive, nor a surface-level change to someone with critical processes running on-premise. The plan comes from what we find in your infrastructure, not from a fixed package sold the same way to everyone. It's the same thinking we apply when recommending which tasks to automate first in a business, and it carries through every IT solutions project we deliver.
Frequently asked questions
Is it safe to migrate to the cloud?
It can be safer than a local server, as long as it's configured correctly. Large providers secure their infrastructure, but access and permission configuration is still the migrating company's responsibility.
How long does a cloud migration take?
It depends on volume and complexity. A simple email-and-files migration can be done in days; a system with several integrations usually takes weeks, spread across phases.
What happens to my data during the migration?
It needs to stay accessible and intact throughout. That's why a verified backup before starting isn't optional — it's the safety net if something fails halfway through.
Can I migrate only part of my business to the cloud?
Yes, and it's usually the recommended approach at first. Starting with the least critical pieces — email, files, backups — leaves room to learn before moving the systems your daily revenue depends on.
Is the cloud cheaper than running your own servers?
For most small businesses, yes, over the medium term: you cut the upfront hardware investment and its upkeep. But recurring cloud spend needs watching too — a poorly sized setup can get expensive as well.
Let's talk about your cloud migration
If you're still relying on a physical server or on backups nobody checks, tell us how your infrastructure works today and we'll tell you what migration you actually need — not more than that. Get in touch.
