Shopify Plus is growing at double-digit rates, and a large share of that growth comes from brands migrating off Magento or Salesforce Commerce Cloud. The reasons are rarely emotional. They come down to a calculation of operating costs, agency overhead, and time-to-market — a calculation that legacy platforms are increasingly losing. Here's what that calculation looks like, what really matters during a migration, and who should think twice before making the move.
A pattern playing out across the market
Anyone following e-commerce news over the past two years will recognize the pattern. A well-known brand announces it's moving its shop to Shopify. A few months later, another one follows. Shopify's enterprise segment is growing at double-digit rates, driven largely by migrations from Magento and Salesforce Commerce Cloud. The platform once seen as a toolkit for small retailers has arrived in the enterprise market. Shopify itself reports platform commerce volume of over $100 billion in Q1 2026 alone, up 35 percent year over year.
Moves like these rarely have a single cause. But when you talk to the people responsible, two terms keep coming up: total cost of ownership and time-to-market. It's worth unpacking both, because that's where the real story lies.
The calculation legacy platforms are losing
The list price of a commerce platform is the smallest part of its cost. The true bill is made up of hosting and infrastructure, security updates and version upgrades, agency hours for maintenance, and the internal time your team spends running the platform instead of running the business.
This is exactly where the worlds diverge. A self-hosted platform turns every update into a project. A major version upgrade on Magento is notorious for consuming a mid-sized budget, and putting it off means accumulating security risks and incompatibilities. With Shopify, operations are the vendor's responsibility. Updates happen without the merchant planning, budgeting, or testing them. The platform is just as available on Black Friday as on a Tuesday morning — and nobody at your company has to be up in the middle of the night to make that happen.
What this means for the calculation: comparing license prices is misleading. What needs to be compared is total cost per order. If you honestly add up hosting, agency retainers, internal operating time, and update projects, then divide by order volume, you get a number you can actually compare. In our experience, that number comes out significantly higher for mature self-hosted installations than the people responsible expect — not because anyone did poor work, but because costs have spread across line items over the years that were never looked at together.
Time-to-market is the other half of the story
Costs can be tolerated as long as the platform delivers. That's why the second reason people switch often carries more weight: speed. A campaign that requires three weeks of lead time on the old platform — because template changes have to go through the agency — can often be handled in a matter of hours by an in-house team on Shopify. A new market that used to be its own project is now a configuration task with Shopify Markets. A new sales channel, whether a marketplace or social commerce, connects through existing integrations.
This speed isn't a convenience feature. It changes how a commerce team works. When changes are cheap, you run more experiments. When every change means raising a ticket with the agency, the small improvements that actually drive conversion growth don't happen. The difference doesn't show up in a single metric — it shows up in the pace of an entire year.
The fair objection: isn't SaaS too inflexible?
Anyone coming from a self-hosted setup usually has a gut reaction: we have custom processes that an off-the-shelf system can't handle. That objection deserves an honest answer, not a sales pitch.
The answer has two parts. First, Shopify's extensibility today is not what it was five years ago. Custom logic runs via Functions directly within the platform, the checkout is extensible, and teams that want full control over the storefront can run it headless. Second — and this is the less comfortable part — a surprisingly large share of the custom processes companies defend aren't differentiation; they're habit. They exist because the old platform allowed everything and nobody ever said no. During a migration, it's worth asking the same question about every special case: does this process deserve to be rebuilt, or does it deserve to be retired? We're honest with our clients when a requirement works against the platform. Sometimes the answer is that Shopify isn't the right path. That happens, and it's better to know before the project starts than after.
What migrations to Shopify actually hinge on
The migration itself follows the same rules as any replatforming. The critical points aren't the template or the checkout. They're the data, the integrations, and the SEO foundation.
Product data, customer data, and order history all need to arrive cleanly — and cleanly means cleaned up beforehand. Carrying the mess from the old platform over without reviewing it means you'll have the same mess in a new environment. The integrations with your ERP, PIM, and fulfillment providers are the nervous system of the business and belong at the top of the planning process, not the bottom. And the rankings the old shop built up over years depend on URLs that need a clean redirect strategy when you switch. These points apply regardless of platform. We covered them in detail in our article on replatforming without a big bang, and they apply to a Shopify migration just as much as to any other.
What's added when moving to Shopify is a shift in mindset. With a self-hosted installation, you bend the platform until it fits. With a SaaS platform, you work with it as intended and extend it selectively where the business genuinely requires it. Teams that make this mental shift are faster after the migration than they've ever been. Teams that try to bring their old way of working with them end up fighting the platform and losing its advantages.
Who shouldn't make the switch
For completeness, this needs to be said too. There are situations where moving to Shopify isn't the right answer. If highly custom pricing and configuration logic sits at the very core of your business, if regulatory requirements tie you to specific hosting models, or if you've only recently completed a clean implementation on another platform, you shouldn't switch because of a headline. A platform migration is a serious undertaking, and the best migration is one you do for the right reasons — or one you consciously decide not to do.
For everyone else: the calculation is worth running. Not the gut-feel version, but the real one, with every cost line item and an honest look at your own special cases.
A worked example, deliberately simplified
Here's what a full cost analysis can look like in practice. The numbers are fictitious; the structure is not. A merchant runs a mature Magento installation. The bill includes hosting with staging environments, an agency maintenance retainer, a larger upgrade project roughly every eighteen months, and a share of the working time of two internal staff members who handle operations, deployments, and plugin conflicts. Each line item looks reasonable on its own. Added up and spread across the year's order volume, the result is a cost per order that exceeds the pure platform license by a substantial multiple.
On the other side sits the SaaS bill: platform fee, apps, transaction costs where applicable, and significantly less internal operating time. Which total comes out lower depends on the individual situation, and it would be misleading to promise a universal outcome. But that's not the point of the example. Most companies have simply never put this calculation together in full. Once they do, they have a basis for a decision instead of a feeling. And in cases where the legacy platform wins, that's a valuable result too — because it takes the migration debate off the table for the next few years.
How a migration unfolds over time
After costs, the next question is always timing. An honest answer in ranges: a focused migration with solid preparation takes months rather than years, but the range is wide and depends almost entirely on three factors: the state of your data, the number and complexity of your integrations, and how quickly decisions get made internally.
The process follows a phased approach. First, preparation: audit and clean the data, take stock of integrations, build the redirect strategy for your URLs. Then the foundation: set up Shopify, build the design and core processes, connect the ERP, test with real data. The old shop keeps running unchanged throughout this phase. Then the cutover itself, kept deliberately narrow: catalog, checkout, and customer accounts go live, redirects take effect. And after that, incremental expansion driven by real numbers rather than the wish list from the kickoff. Stick to this rhythm, avoid going live during peak season, and you take most of the fear out of the project.
How to make the decision clearly
The first step isn't an RFP — it's a stocktake. What does your shop cost today per order, with every line item included? How long does it take you to go from a campaign idea to launch? Which of your custom processes genuinely qualify as business-critical, and which ones are just habit? With answers to those three questions, what started as a gut feeling becomes a decision brief.
As a Shopify partner, we work through that brief with you, including the uncomfortable line items. And if the answer points toward switching, we plan it in phases so your live business stays stable throughout. You can find the starting point on our Shopify page. If your next step after the migration is wholesale, read on at B2B on Shopify. All our analysis is available in our Shopify Insights.