Migrating from Magento or PrestaShop to Shopify: What It Actually Involves, How Long It Takes, and How to Keep Your SEO Rankings

Who this article is for

This guide is written for operations managers, e-commerce directors, and IT decision-makers at companies running mid-to-large Magento or PrestaShop stores — typically with 1,000 or more SKUs, existing ERP or PIM integrations, and business logic that goes beyond standard checkout flows. If you are responsible for a migration that cannot afford data loss, SEO damage, or broken integrations, read on.

Why businesses in Italy are moving away from Magento and PrestaShop right now

There is no single moment when a Magento or PrestaShop store stops working. The decision to migrate usually builds slowly: a developer who leaves and is difficult to replace, a server upgrade that costs more than expected, a new feature that takes three months instead of three weeks. At some point, the total cost of staying where you are quietly exceeds the cost of moving.

Across Italy and the DACH region, we are seeing this calculation shift for a growing number of mid-size companies. The reasons are consistent. If you're still evaluating which platform to move to, see our detailed breakdown of how Shopify compares to Shopware and custom development for European businesses.

The real cost of staying on Magento: maintenance, developer dependency, and infrastructure

Magento — now Adobe Commerce — remains a technically capable platform. But its total cost of ownership is high in ways that do not always appear in initial budget discussions.

• Hosting and server management are entirely your responsibility. A performant, secure Magento environment typically requires a dedicated server, regular patching, and ongoing DevOps attention.

• Magento development requires specialist knowledge. Developers with genuine Magento expertise are scarce and expensive. If your in-house developer leaves, replacing that knowledge takes months.

• The module ecosystem has fragmented. After Adobe's acquisition and the Magento 1 end-of-life, many extensions were abandoned or poorly maintained. Keeping a complex Magento 2 store current requires ongoing module auditing and compatibility work.

• Security updates are your problem. Magento has had significant CVEs in recent years. Patching a heavily customised store without breaking functionality requires careful planning and dedicated time.

For companies whose core business is not e-commerce technology, this overhead is a distraction. The engineering hours spent on infrastructure maintenance and dependency management are hours not spent on product, pricing, or growth.

What PrestaShop merchants encounter at scale

PrestaShop tells a different story at scale. The platform is genuinely useful for smaller stores and serves a large Italian market. But as a business grows — more SKUs, multiple warehouses, B2B pricing logic, international markets — PrestaShop's architecture begins to show strain.

• Performance degrades significantly with large catalogs if the database and caching layers are not carefully engineered.

• Native multilingual support is functional but requires considerable configuration work for serious multi-market operations.

• ERP and PIM integrations are typically custom-built, with no standard connectors for Italian business systems.

• The developer community is smaller than Magento or Shopify, which limits available expertise for complex customisations.

What Shopify offers that Magento and PrestaShop do not

The argument for Shopify at this scale is not primarily about simplicity. It is about shifting where your technical investment goes.

With Shopify, infrastructure, security, hosting, and core platform updates are Shopify's responsibility. Your development team focuses on business logic, integrations, and the customer experience — not server management. For a company migrating from a self-hosted platform, this reallocation of technical attention is often the most significant operational gain. Smart Dato's e-commerce solutions are built around exactly this model — custom-built, integrated, and designed for mid-size businesses that have outgrown standard platforms.

Additionally, Shopify's API architecture is well-documented and mature. Custom integrations with ERP, PIM, logistics, and accounting systems can be built reliably and maintained over time. This matters considerably for companies whose stores are connected to complex operational infrastructure.

What a Shopify migration actually involves

Most migration guides describe the process as a linear sequence of simple steps. For a 50-product store with no integrations, that is accurate. For a company with a large catalog, ERP dependencies, and custom business logic, the reality is considerably more involved. Here is what a professional migration actually requires.

Phase 1: Pre-migration audit — understanding what you have

Before any data moves, the existing environment needs to be mapped completely. This means cataloguing not just products and orders, but everything the current store depends on.

• Full SKU inventory: products, variants, attributes, media assets, and custom fields that do not map to standard Shopify properties.

• Order history: volume, data structure, customer associations, and which historical data is operationally necessary versus archival.

• Customer accounts: authentication setup, B2B account structures, pricing tiers, and credit terms.

• Third-party integrations: ERP connectors, PIM feeds, logistics platforms, payment gateways, marketing tools, customer service systems.

• Custom functionality: pricing rules, discount logic, checkout modifications, custom shipping calculations, B2B approval workflows.

• SEO baseline: full URL export, ranking positions, backlink profile, structured data, canonical tags.

The output of this phase is a migration scope document that defines what is being moved, what is being rebuilt, and what is being replaced with a different solution. Without this, cost and timeline estimates are unreliable.

Phase 2: Data architecture and mapping

Magento and PrestaShop data structures do not map cleanly to Shopify. This is one of the most technically demanding phases of any serious migration.

Shopify's product model handles most standard catalog structures well, but has specific constraints: variant limits per product, attribute handling differences, and metafield requirements for custom data. Products with hundreds of variants or highly customised attribute sets require careful mapping decisions before import.

Customer data migration requires particular attention when the store has B2B customers with account-level pricing, credit limits, or custom payment terms. These structures need to be recreated in Shopify's B2B framework or via custom development before customer data is imported.

Order history presents a different challenge: historical orders from Magento or PrestaShop can be imported into Shopify for record-keeping, but the data needs to be cleaned and normalised to fit Shopify's order schema. This process surfaces data quality issues — incomplete records, inconsistent formatting — that should be resolved before import.

Phase 3: Shopify store build and custom development

This is where the new store is built. For a company migrating from a platform with significant custom functionality, this phase involves real development work — not theme selection and plugin installation.

Custom development requirements typically include:

• Checkout customisation: Shopify's native checkout is highly optimised but may need modifications for specific business requirements, particularly for B2B workflows, custom payment logic, or complex shipping rules.

• ERP and PIM integration rebuild: if your existing store was connected to an ERP or PIM, those integrations need to be rebuilt using Shopify's APIs. The approach — whether via custom code, middleware, or a hybrid — depends on your ERP system, data volume, and real-time requirements. The integration planning principles are consistent across platforms — our guide on how ERP and PIM integrations work in a B2B commerce context covers the key decisions in detail, even if you are building on Shopify rather than Shopware.

• Custom pricing logic: volume discounts, customer-group pricing, contract-based pricing, and agent-managed accounts all require custom implementation on Shopify.

• Fiscal compliance: for the Italian market, integration with fatturazione elettronica systems typically requires custom development. This is not something Shopify handles natively.

The store build phase runs in parallel with data preparation, not after it. This is important for timeline management.

Phase 4: Data import and quality validation

Once the Shopify environment is built and configured, data is imported in stages. Products and catalog data come first, followed by customers, then order history.

Each import stage requires validation. For a large catalog, this means automated checks for completeness — confirming that all variants, media assets, metafields, and SEO metadata have been correctly transferred — followed by manual sampling across product types, price tiers, and customer categories.

This phase consistently surfaces issues that were not visible in the pre-migration audit: custom fields that did not transfer correctly, media assets with encoding issues, customer records with conflicting data. Build validation time into the project plan — it is not optional.

Phase 5: 301 redirects and SEO preservation

This is where the majority of SEO risk lives, and it is the phase that is most frequently handled poorly on complex migrations.

Shopify uses a different URL structure from Magento and PrestaShop. Product URLs, collection URLs, blog post URLs, and faceted navigation pages will all change format unless specific redirect rules are implemented.

For a store with thousands of pages and established search rankings, incomplete redirect mapping is not a minor issue. It is the difference between a migration that maintains organic traffic and one that triggers a significant ranking drop that takes six to twelve months to recover from.

A professional redirect implementation for a large store requires:

• A complete export of all indexed URLs from the existing store, cross-referenced with Google Search Console data to identify pages with ranking value.

• A redirect map that covers product pages, collection pages, filtered URLs, blog content, and any pages with inbound links.

• Shopify's native redirect functionality handles straightforward 301s, but complex redirect logic — particularly for faceted navigation or parameterised URLs — may require additional implementation work.

• Post-launch monitoring of crawl errors and ranking movements for a minimum of four weeks.

Important note on Shopify URL structure

Shopify enforces specific URL patterns: /products/ for product pages, /collections/ for categories, /pages/ for static content. These cannot be changed. All redirects from your old URL structure must point to these new paths. For stores with strong SEO in category and filter pages, this requires careful planning — particularly if your current Magento or PrestaShop store uses custom URL structures.

Phase 6: Pre-launch checklist and go-live

Before the new store goes live, a structured pre-launch review covers:

• Full checkout flow testing across all payment methods, shipping zones, and order types.

• ERP and integration testing under realistic data volumes — not just smoke tests.

• Tax and pricing configuration verification, particularly for multi-market stores.

• For Italian stores: verification that fatturazione elettronica and IVA settings are correctly configured.

• Performance baseline: Core Web Vitals, page load times on mobile, image optimisation.

• DNS cutover plan with rollback option and minimal downtime window.

The SEO risks of a Shopify migration, and how to protect your rankings

The question we hear most often from decision-makers considering a migration is: "Will we lose our Google rankings?" The answer is: not necessarily, but it depends entirely on how the SEO transition is managed.

Migrations that damage SEO share common failure points. Understanding them in advance means they can be avoided.

URL structure changes and redirect implementation

As noted above, URL structure changes are the primary SEO risk. The solution is not complicated in principle — map every old URL to its new equivalent, implement 301 redirects, monitor for errors — but execution on a large store with thousands of pages requires systematic work, not guesswork.

The most common failure is incomplete redirect coverage: redirects are implemented for product pages but not for collection pages, pagination variants, filtered URLs, or blog content. Google treats unredirected old URLs as 404 errors and eventually removes their ranking signals. If those pages had accumulated link equity or ranking positions over years, that signal is lost.

Preserving metadata, structured data, and canonical configuration

Shopify handles core SEO metadata well. Each page has configurable title tags and meta descriptions, and Shopify generates sitemap.xml and robots.txt automatically. However, several elements require explicit attention during migration:

• Product structured data (schema.org): Shopify generates this automatically for product pages, but verify that product attributes — price, availability, brand, reviews — are being output correctly after migration.

• Canonical tags: Shopify manages canonicals, but faceted navigation and collection filtering can generate duplicate URL variants. Review canonical configuration for collection pages carefully.

• Image alt text: Confirm that alt text was correctly transferred during product import. Bulk import tools sometimes drop this field.

• Internal linking: The new URL structure may invalidate internal links embedded in product descriptions or static content. These need to be updated post-migration.

What integrations and custom functionality need to be rebuilt

This section is specifically relevant to companies with existing operational integrations. It is the part of migration planning that is most frequently underestimated in both scope and timeline.

ERP and order management integration

If your Magento or PrestaShop store is currently connected to an ERP — SAP, Zucchetti, TeamSystem, AS400, or a custom system — that connection will need to be rebuilt on Shopify's API infrastructure.

The rebuild is not simply a matter of pointing the existing connector at a new endpoint. Shopify's data model differs from Magento's, and integration logic that was built for one API will not transfer directly to the other. The integration scope typically includes:

• Product and inventory sync: real-time or scheduled synchronisation of stock levels, product data, and pricing between ERP and Shopify.

• Order flow: automated transmission of confirmed orders from Shopify to the ERP for fulfilment processing, including line item detail, customer data, and shipping instructions.

• Invoice and financial data: for Italian companies, this includes integration with fatturazione elettronica workflows — a requirement that does not exist for most non-Italian markets and is often overlooked in generic migration guides.

• Returns and credit notes: reverse logistics flows need to be represented in both systems correctly.

Smart Dato Hub is our middleware and integration layer specifically built for these scenarios. We have built Shopify integrations for Italian ERP systems including AS400, Zucchetti, TeamSystem, and bespoke platforms. If your integration requirements are complex, this is an area where specialist experience significantly reduces risk and delivery time.

Custom pricing rules, B2B logic, and checkout flows

Magento's flexibility has often been used to implement pricing and checkout logic that is specific to a business's commercial model: agent-managed accounts, tiered pricing by customer group, minimum order values, custom payment terms, quote-to-order workflows.

Shopify's native B2B features cover a meaningful portion of this functionality: company accounts, customer-specific price lists, net payment terms, and draft orders. However, Shopify's B2B features are only available on Shopify Plus — if you're unsure which plan fits your scale, our guide on whether Shopify or Shopify Plus is right for your business covers the decision framework in detail.

The key planning question is: which of your current custom behaviours are business-critical and need to be rebuilt, and which were workarounds that a better-designed Shopify implementation makes unnecessary? This assessment is worth doing carefully before development begins — it directly affects project scope and cost.

Realistic timelines: how long does a migration take?

Timeline estimates depend heavily on store complexity, the state of existing data, and whether integrations need to be rebuilt. The ranges below assume a professional migration with a dedicated development team. DIY migrations or agencies without integration experience will differ significantly.

For a mid-size store (1,000–5,000 SKUs, basic integrations):

• Pre-migration audit and scope: 2–3 weeks

• Data mapping and preparation: 2–4 weeks

• Shopify store build: 4–8 weeks (depending on custom development requirements)

• Data import and validation: 1–2 weeks

• SEO redirect implementation and testing: 1–2 weeks

• Pre-launch testing and go-live: 1 week

• Total: approximately 3–5 months from project start to go-live

For a large store (5,000+ SKUs, ERP integration, custom B2B logic):

• The same phases apply, but each takes longer.

• ERP integration rebuild alone typically requires 4–8 weeks of dedicated development.

• Total: 5–9 months is a realistic expectation for a complex migration with full integration rebuild.

The most common cause of timeline overruns is underestimated data quality work. Magento and PrestaShop stores that have been running for five or more years frequently contain inconsistent product data, duplicate customer records, and deprecated integration configurations. Cleaning this data before migration takes time that is difficult to predict without a detailed audit.

When to handle it yourself — and when to work with a specialist

Not every migration requires an agency. If your store has fewer than 500 products, no ERP connections, standard checkout flows, and limited custom functionality, a careful internal migration with Shopify's official migration tools and documentation is a reasonable approach.

The decision to engage a specialist developer becomes clear when any of the following apply:

• Your store has active ERP, PIM, or logistics integrations that need to remain operational during and after the migration.

• You have custom pricing logic, B2B account structures, or checkout modifications that need to be rebuilt.

• Your store has established search rankings that you cannot afford to damage.

• Your catalog has non-standard data structures — complex variant configurations, custom attributes, or product relationships — that require careful mapping.

• Your store operates across multiple markets with different tax rules, languages, or currencies.

• You are in Italy and need to ensure fiscal compliance including fatturazione elettronica integration.

In these scenarios, the cost of a professional migration is not just the delivery of a working store — it is the risk mitigation: avoided SEO damage, correctly rebuilt integrations, and validated data. The cost of getting these wrong post-launch is typically higher than the cost of getting them right during the project.

If your project involves any of the above — ERP integration, B2B logic, Italian fiscal compliance, or an established SEO profile to protect — our Shopify development services in Italy and the DACH region are built for exactly this level of complexity.

Frequently asked questions

Can I migrate from Magento to Shopify without losing my order history?

Yes. Historical orders can be imported into Shopify using the Admin API. The process requires data mapping and normalisation — Magento's order schema does not match Shopify's directly — but the data can be preserved. Note that imported historical orders are read-only in Shopify; they cannot be processed or modified as live orders. For operational purposes, your ERP system remains the record of truth for historical transactions.

Will my Google rankings drop after the migration?

If the migration is handled correctly — specifically, if redirect mapping is complete and implemented before go-live — rankings should be maintained or improve. A well-executed migration to Shopify often results in performance improvements (faster page load, better Core Web Vitals) that positively affect rankings over time. The risk is specifically in incomplete redirect implementation, which causes Google to treat old URLs as 404 errors and lose their ranking signal.

How much does a professional Magento-to-Shopify migration cost in Italy?

Costs vary considerably based on store complexity. A straightforward migration with basic integrations and no custom development might start from €8,000–15,000. A migration involving ERP integration rebuild, custom B2B logic, and a large catalog will typically range from €25,000 to €60,000 or more, depending on scope. The pre-migration audit produces a detailed scope and cost estimate before any commitment is made.

What happens to my customer accounts and passwords?

Customer account data — names, addresses, order history, and contact information — can be migrated. Passwords cannot be transferred: they are hashed using platform-specific algorithms and cannot be decrypted. After migration, customers receive an email inviting them to set a new password. This is standard practice across all Magento-to-Shopify migrations and is typically well-received when communicated clearly.

We use a custom ERP built in-house. Can it still connect to Shopify?

Yes. Shopify's Admin API is well-documented and widely used for custom integrations. A custom ERP integration requires development work to build and configure the connector, but this is a standard part of complex migration projects. The key inputs are the ERP's API or data export capabilities — what data it can send and receive, and in what format. We have built integrations for non-standard and legacy ERP systems; the feasibility assessment starts with understanding the ERP side of the connection.

Planning a migration from Magento or PrestaShop to Shopify?

We work with mid-size and enterprise businesses in Italy and the DACH region on complex Shopify migrations, including ERP integration rebuilds, B2B functionality, Italian fiscal compliance, and SEO preservation. We start every project with a structured pre-migration audit that gives you a clear picture of scope, timeline, and cost before any development begins.

Contact us to discuss your project