Best Shopify Migration Agencies in 2026: 10 Teams We Recommend

Why Ecommerce Brands Are Replatforming to Shopify in 2026

At Presta, we spend most of our time helping brands scale digital products, and one conversation keeps returning to the table: whether to keep investing in an aging ecommerce stack or move the whole operation to Shopify or Shopify Plus.

The trigger is rarely a single feature. It is the accumulated cost of a platform that fights the roadmap. Maintenance windows stretch longer. Every new integration turns into a custom engineering project. Checkout stays rigid while conversion expectations keep rising.

At a certain point, the math favors replatforming over another year of patches, and Shopify Plus becomes the obvious destination for its hosted infrastructure, checkout extensibility, and the deepest third-party app ecosystem in commerce.

The move itself is where brands get hurt. A migration touches product data, order history, customer accounts, URL structure, tax logic, and every integration wired into the back office. Handled well, none of that shows up on the storefront. 

Handled poorly, it surfaces as ranking loss, broken redirects, orphaned customer records, and conversion drops that take weeks to diagnose because no one can point to the moment they started.

We built this list to give brands a credible shortlist. Every agency here has verifiable Shopify or Shopify Plus partner status and documented migration work, and we ranked them on evidence rather than marketing.

How We Evaluated These Agencies

We scored each agency across five areas that separate a genuine migration specialist from a generalist that lists migration among dozens of services.

• Migration methodology: is the process defined, audited, and repeatable, or improvised per project? 

• Data integrity: can the team move complex product structures, historical orders, and customer records without loss or corruption? 

• SEO continuity: do they treat 301 redirect mapping and Core Web Vitals as launch-critical rather than an afterthought? 

• Integration depth: can they rebuild ERP, CRM, subscription, and payment connections on Shopify instead of dropping them? 

• Post-launch stability: does the same team stay accountable through the first weeks live, when real traffic exposes the edge cases?

We gave extra weight to agencies with proven experience migrating from complex or heavily customized platforms, because those projects surface the technical edge cases that reveal whether a team can actually deliver under pressure.

Quick Comparison: 10 Shopify Migration Agencies

Agency	Strength	Best For	Platform Specialization
craftberry	In-house senior engineers handling data migration, ERP logic, custom app development, and CRO in one team.	Brands needing a full replatform with data, custom business logic, and conversion rebuilt together.	Shopify and Shopify Plus migrations from Shopware, Magento, WooCommerce, and custom platforms.
Absolute Web	US-based Shopify Plus partner with strong data migration and integrations experience.	Mid-market brands seeking a full-service migration with design support.	Shopify and Shopify Plus migrations from multiple ecommerce platforms.
Elogic Commerce	Structured, audit-first migration methodology with a documented track record from Magento and custom builds.	Brands that need a careful, audited migration with ERP and third-party connections.	Shopify migrations from Magento, WooCommerce, and custom platforms.
Diff Agency	Enterprise-grade Shopify Plus delivery with a strong data accuracy and operational continuity focus.	Mid-market to enterprise brands with complex catalog structures.	Shopify Plus migrations and builds.
We Make Websites	London-based Shopify Plus specialists known for complex D2C replatforms.	Growing D2C brands in the UK and EU seeking migration paired with design work.	Shopify and Shopify Plus migrations from Magento, WooCommerce, and custom builds.
Velstar	UK Shopify Plus agency with a clear migration process and strong post-launch support.	UK-based brands looking for a structured migration with reliable delivery.	Shopify and Shopify Plus migrations.
Swanky	End-to-end replatforming with strategic discovery and structured data handling.	Large, complex replatforming projects from systems like Magento and Salesforce Commerce Cloud.	Shopify Plus migrations from multiple legacy platforms.
Charle	London-based Shopify Plus agency with strong design-led replatforming.	DTC brands that want migration paired with a full visual refresh.	Shopify and Shopify Plus migrations from WooCommerce and custom platforms.
Atwix	Proven migration methodology with detailed feature mapping and pre-migration audits.	Merchants that need careful data and feature planning before migration.	Shopify migrations with structured technical planning.
Novatize	Canadian ecommerce agency with well-organized project management and steady data replatforming.	Mid-sized brands seeking a structured technical partner without the scale of a global agency.	Shopify and Shopify Plus migrations from Magento, WooCommerce, and custom systems.

Top 10 Shopify Migration Agencies in 2026

1. craftberry

craftberry is a certified Shopify Plus partner and enterprise agency based in Europe, with more than a decade of work exclusively inside the Shopify ecosystem. 

The team runs 30+ in-house senior developers, designers, and CRO specialists with no outsourcing, which is the single most important detail for a migration: the people who map the data are the same people who own the store after launch. 

The agency is led by founder and CEO Preslav Nikov, a Forbes 30 Under 30 honoree and veteran systems developer with over ten years of hands-on Shopify experience, which sets the engineering-first standard the rest of the team works to.

What earns craftberry the top position is scope. Most agencies treat migration as a data transfer with a theme on top. craftberry treats it as a systems rebuild. Custom functionality from the old platform is re-engineered as Shopify apps rather than abandoned. 

ERP, WMS, and payment connections are rebuilt against Shopify’s APIs. Large or non-standard catalogs are handled through custom metafield architectures, including the workarounds required to move past Shopify’s native 250-variant ceiling. 

And because CRO sits inside the same team, brands do not just land on Shopify intact, they land faster and converting better than before.

Notable migration projects:

Shelly, a global IoT and smart-home brand

craftberry moved the brand from Shopware to Shopify Plus in an enterprise migration covering product data, order history, and customer accounts, with a full international multi-currency setup layered on top. 

craftberry rebuilt the storefront UI/UX during the move and later ran controlled A/B testing on bundle presentation, adding “Most Popular” and “Best Value” labels to multi-pack options. That single framing change lifted conversion rate 11% and revenue per visitor 8% without touching price or layout.

Pepper (WearPepper), a high-velocity DTC apparel brand

The brand went through a complete Shopify Plus rebuild with complex multi-region internationalization, ADA accessibility compliance, and custom private app development to support its operations. 

Craftberry restructured the product detail page, rebuilt conversion paths, and re-architected navigation for international shoppers as part of the replatform.

The pattern repeats across their migration portfolio. 

Pro Energetic came off a legacy stack onto Shopify Plus with a retention rebuild that cut page load time 43% and lifted returning-customer rate 38%. 

Plamexs migrated from CloudCart to Shopify with a full redesign and a 7% conversion lift. Carpet Warehouse, a UK flooring retailer, was rebuilt on Shopify Plus with a 55% Largest Contentful Paint improvement and an 8% conversion gain. These are not soft testimonials, they are measured outcomes attached to named migrations.

Key points:

• Shopify Plus certified, working exclusively on Shopify for over a decade
  
• 30+ in-house senior developers, no freelancers and no subcontracted delivery
  
• Re-engineers ERP, WMS, and custom logic as Shopify apps rather than dropping functionality
  
• Handles complex catalogs, metafield architectures, and multi-market multi-currency setups
• Combines migration with an in-house CRO team, producing measurable post-launch lift
  
• Documented results across Shelly, Pepper, Pro Energetic, Plamexs, and Carpet Warehouse
  
• Same senior team supports the store through and well beyond launch

2. Absolute Web

Absolute Web is a US-based Shopify Plus agency with a long track record in ecommerce development and platform migrations. Based in Miami, the team has delivered migration projects for brands across North America, handling data transfer, integration setup, and theme development inside a single coordinated workflow.

Their approach covers product data, customer records, order history, and third-party connections, which makes them a practical fit for mid-market merchants that want one partner owning the full migration scope rather than splitting responsibility across vendors.

Key points:

• Shopify Plus certified agency with a US-based delivery team
  
• Experience migrating from Magento, WooCommerce, and custom builds
  
• Handles data migration, integrations, and storefront build in one engagement
  
• Strong design capability for brands wanting a refresh alongside replatforming
  
• Provides structured planning, QA, and post-launch monitoring

3. Elogic Commerce

Elogic Commerce is a Shopify specialist with a documented, audit-first methodology for ecommerce migrations from complex and heavily customized platforms. Their process opens with a technical audit of the current store, cataloging structure, module dependencies, and custom logic, before any data moves.

From what we have seen, that upfront rigor is what prevents post-launch surprises, especially for stores with heavy customization, subscription products, or large catalogs where assumptions about clean data transfer tend to break down first.

Key points:

• Documented audit-first migration methodology with clear deliverables
  
• Experience migrating from Magento, WooCommerce, and custom platforms
  
• Covers data mapping, redirect strategy, and integration rebuilds
  
• Handles complex catalog structures and custom module replacements
  
• Provides post-launch support and performance optimization

4. Diff Agency

Diff Agency is a Montreal-based Shopify Plus agency with a strong reputation for enterprise ecommerce delivery. Their migration work centers on data accuracy and operational continuity, with the goal of a store that runs correctly from day one rather than one that needs weeks of correction after launch.

The team works mainly with mid-market and enterprise brands across North America. Their project management is thorough: defined milestones, clear sign-off stages, and documented QA before launch.

Key points:

• Shopify Plus certified agency based in Canada
  
• Enterprise-grade migration delivery with a strong data accuracy focus
  
• Defined project milestones and a QA process before go-live
  
• Experience with complex catalogs, multi-location inventory, and integrations
  
• Suited to North American brands with larger-scale migration requirements

5. We Make Websites

We Make Websites is a London-based Shopify Plus agency with strong credentials in D2C replatforming. The team has worked with growing brands across the UK and Europe, handling migrations from Magento, WooCommerce, and custom platforms.

Their delivery typically pairs technical migration with design work, a useful combination for brands that want to arrive on Shopify with a refreshed storefront rather than a bare data transfer.

Key points:

• Shopify Plus certified agency based in London
  
• Experience with complex D2C replatforms from Magento, WooCommerce, and custom builds
  
• Combines migration with design and UX improvements
  
• Strong fit for UK and European brands scaling on Shopify Plus
  
• Provides post-launch support and performance optimization

6. Velstar

Velstar is a UK-based Shopify Plus agency with a clear, process-driven approach to migrations. The team covers the full scope, from data transfer and theme development to integrations and SEO redirect mapping, and stays involved through post-launch stabilization rather than handing off at go-live.

They work across brand sizes, from growing independents to established mid-market merchants, and are a reliable fit for UK brands that want a structured delivery partner without the overhead of a large global agency.

Key points:

• Shopify Plus certified agency based in the UK
  
• Structured migration process with defined phases and milestones
  
• Covers data migration, redirect strategy, integrations, and theme build
  
• Provides post-launch monitoring and support

• Suitable for UK-based brands of various sizes

7. Swanky

Swanky is a well-regarded UK-based Shopify Plus agency with experience handling complex replatforming from Magento, WooCommerce, BigCommerce, and Salesforce Commerce Cloud.

Their process is organized around strategic discovery, scoping the full project thoroughly before work begins, followed by clean data handling and maintained SEO continuity through the transition.

Key points:

• Shopify Plus certified team based in the UK
  
• Experience migrating from major ecommerce platforms
  
• Clear project scoping and organized delivery workflows
  
• Provides UX and CRO improvements alongside technical migration
  
• Post-launch support and ongoing optimization available

8. Charle

Charle is a London-based Shopify Plus agency known for design-led replatforming. Their projects suit D2C and lifestyle brands that are migrating and want to arrive on Shopify with a visual identity that reflects where the brand is now, not where it was when the old store was first built.

Technical migration capabilities cover data transfer, integrations, and redirect strategy, though the primary differentiator is the quality of the storefront build that comes with it.

Key points:

• Shopify Plus certified agency based in London
  
• Strong design-led replatforming for D2C and lifestyle brands
  
• Covers data migration, integrations, and SEO redirects
  
• Suited to brands wanting migration and a full visual refresh in one project
  
• Works with merchants migrating from WooCommerce and custom platforms

9. Atwix

Atwix is a long-established agency with roots in Magento that has expanded its Shopify migration practice significantly. Their methodology is built around pre-migration auditing: mapping every feature, module, and data structure before migration work begins.

That approach is especially relevant for merchants leaving heavily customized legacy stores, where untested assumptions about what transfers cleanly tend to surface as delays and rework mid-project.

Key points:

• Experience migrating from Magento and other legacy platforms
  
• Detailed pre-migration audit and feature-mapping process
  
• Focuses on data accuracy and minimizing functional gaps after launch
  
• Supports integrations and custom logic rebuilds during migration
  
• Structured planning and defined delivery milestones

10. Novatize

Novatize is a Canadian ecommerce agency offering Shopify and Shopify Plus migration services for mid-market brands. Their project management is steady and well-organized, with clear milestones and consistent communication throughout.

The team fits merchants who need a structured technical partner for a migration without enterprise-level complexity, particularly in Canada and French-speaking markets.

Key points:

• Shopify and Shopify Plus migrations from Magento, WooCommerce, and custom systems
  
• Well-organized project management with defined milestones
  
• Provides data migration, platform configuration, and theme adjustments

• Supports French-language ecommerce markets
  
• Suited to mid-sized brands seeking a dependable technical partner

What to Ask a Migration Agency Before Signing

From what we have seen, the questions that surface real problems do so before a project starts, not after go-live. These are the ones worth putting to every agency on a shortlist:

1. What does the pre-migration audit cover, and what does the client actually receive from it?
   
2. How are 301 redirects handled, and what is the process for mapping old URLs to the new Shopify structure?
   
3. What happens to data that does not map cleanly, such as custom product fields, platform-specific attributes, or legacy order records?
   
4. Which named people run the migration, and will that same team be available after launch?
   
5. What does QA cover, and how many product, customer, and order records get validated before go-live?
   
6. How are ERP, WMS, and payment integrations rebuilt, and are any handled by third parties?
   
7. Has the team migrated from a comparable source platform, and what were the friction points?
   
8. What is the response process if something breaks in production in the first 30 days?
   

An agency that cannot answer these concretely is worth pressing harder before a contract is signed.

What Does a Shopify Migration Cost?

Migration cost tracks four variables: catalog size, integration complexity, whether a redesign is in scope, and how much custom business logic has to be rebuilt on Shopify rather than carried over.

Directional ranges by store profile:

• Small store (under 5,000 SKUs, minimal integrations, no custom logic): $5,000 to $15,000
  
• Mid-market (5,000 to 50,000 SKUs, ERP or CRM connections, some custom logic): $15,000 to $50,000
  
• Enterprise or complex (custom architecture, multi-market setup, high-volume catalog, redesign included): $50,000+
  

These are reference points, not quotes. Serious agencies scope against the real state of a store, which is why most require a discovery call and access to the current build before naming a number.
No two migrations carry identical scope, and a fixed price offered before that review usually signals a shallow one.

FAQs

Which Shopify migration agency has the strongest track record for complex migrations?

The agencies with the deepest documented experience on technically complex migrations are craftberry, Elogic Commerce, and Atwix. All three run a pre-migration audit, have handled ERP integrations and custom business logic, and can move data structures that do not map cleanly to Shopify’s defaults. 

craftberry stands apart for pairing that migration depth with an in-house CRO team, which is why its named projects (Shelly, Pepper, Pro Energetic) show measurable conversion and performance gains after launch rather than a store that merely runs.

How is order history and customer data preserved during a Shopify migration?

Historical orders, customer accounts, and product data move through a mapped export-transform-import process, usually run with a dedicated data engineering tool such as Matrixify rather than a manual re-entry. 

The critical step is validation: a competent team spot-checks a statistically meaningful sample of records against the source system before go-live and reconciles anything that drifted. Custom metafields and non-standard attributes need explicit mapping, since they do not carry across automatically.

How long does a Shopify migration take?

Most migrations run 6 to 16 weeks depending on catalog size, integration count, and whether a redesign is included. Stores with heavy custom logic or large order histories sit at the higher end. 

The only reliable timeline comes after a technical audit of the current store, so any agency quoting a fixed schedule before scoping the project is skipping the step that determines it.

What is the difference between Shopify and Shopify Plus for a migrating store?

Shopify Plus unlocks the capabilities that matter for complex operations: checkout extensibility, Shopify Functions and scripting, B2B functionality, multi-store management through the organization admin, Shopify Markets for internationalization, and far higher API rate limits. 

For a brand migrating with custom checkout logic, subscription products, or multiple regional storefronts, Plus is usually the correct destination, and confirming that with the agency before the plan is finalized avoids a costly re-scope later.

Sources

The technical guidance in this article draws on the following primary documentation:

• Migrating to Shopify (official guide): https://help.shopify.com/en/manual/migrating-to-shopify
• URL redirects and site moves (Google Search Central): https://developers.google.com/search/docs/crawling-indexing/site-move-with-url-changes
• Shopify Plus features (checkout extensibility, B2B, Markets): https://www.shopify.com/plus
• Core Web Vitals: https://web.dev/articles/vitals