Migrating an established ecommerce business to Shopify is rarely as simple as exporting products and importing them into a new storefront.
A retailer with 20,000 SKUs may need to preserve thousands of product relationships. An automotive brand might depend on vehicle fitment tools that do not exist in a standard Shopify theme. A manufacturer moving from Magento may need its ERP, customer pricing, and fulfillment systems to keep working throughout the transition.
These are different migration problems, and they require different technical expertise.
The best Shopify migration agencies in 2026 combine platform knowledge with custom development, data architecture, systems integration, and experience rebuilding complex ecommerce workflows.
This guide compares seven Shopify development and migration agencies, starting with Fyresite, and explains which types of projects each is best equipped to handle.
In Short
The best Shopify migration agency depends on what your existing store needs to preserve or improve. Fyresite is a strong choice for Shopify Plus migrations involving custom functionality, complex product catalogs, and specialized purchasing experiences. Absolute Web works across ecommerce platforms and integrated commerce environments, while scandiweb brings experience with enterprise replatforming. Eastside Co and Swanky are relevant for storefront modernization and international commerce, respectively.
For businesses migrating from Magento, WooCommerce, or another established platform, the most important question is whether an agency can rebuild the operational functionality behind the storefront—not just transfer the visible website.
What to Look for in a Shopify Migration Agency
Not every Shopify development agency has the same migration experience.
A team that regularly launches new Shopify stores may be excellent at theme development but have limited experience migrating a business with years of customer records, complex product relationships, custom checkout requirements, and multiple backend integrations.
Four capabilities distinguish agencies suited to complex migration projects.
- Platform migration experience. Look for documented projects involving the platform you are leaving. Magento-to-Shopify migrations have different technical challenges from WooCommerce migrations or transitions from proprietary commerce systems.
- Custom development expertise. Product configurators, compatibility tools, specialized catalogs, and custom purchasing workflows may need to be rebuilt using Shopify's architecture. The agency should understand which requirements can be handled natively and which need custom development.
- Systems integration. Inventory, ERP, fulfillment, CRM, and accounting systems often sit outside the ecommerce platform. A migration needs a clear approach to data synchronization, error handling, and operational continuity.
- Documented project outcomes. Case studies showing the previous platform, technical challenges, implemented functionality, and measurable results provide stronger evidence than a general list of development services.
What Does a Shopify Migration Agency Actually Do?
A Shopify migration agency moves an existing ecommerce business onto Shopify while preserving the data, functionality, and integrations required to operate it.
A typical project includes product and customer data migration, storefront development, URL mapping, integration configuration, testing, and launch support.
Complex projects go further.
For example, a Magento store may use custom product attributes and relationships that need to be represented through Shopify metafields, metaobjects, variants, or custom functionality.
A B2B distributor may depend on account-specific pricing and payment terms. An automotive retailer may need compatibility search by vehicle make, model, and year.
The migration agency must translate these existing requirements into a workable Shopify implementation.
Shopify Migrations Look Different for Retail, Automotive, B2B, and Enterprise Stores
Retail and DTC migrations often prioritize storefront usability, product discovery, merchandising, and checkout performance. Businesses moving from WooCommerce or another platform may use the migration to redesign their shopping experience.
Automotive ecommerce migrations introduce compatibility data, extensive catalogs, specialized product attributes, and configurable products. Vehicle fitment and technical product selection can be central to the purchasing experience.
B2B and wholesale migrations require careful handling of company accounts, customer-specific catalogs, pricing, payment terms, and purchasing workflows. These requirements become more complex when the storefront must communicate with an ERP.
Enterprise migrations frequently involve multiple systems, markets, and teams. Data validation, integration testing, and phased implementation become essential to reducing operational disruption.
Choosing a migration agency starts with identifying which of these challenges defines your project.
Best Shopify Migration Agencies Compared
| Agency | Best for | Standout strength |
|---|---|---|
| Fyresite | Complex Shopify Plus migrations | Custom development, automotive ecommerce, and product configuration |
| Absolute Web | Integrated ecommerce replatforming | Cross-platform commerce development and integrations |
| scandiweb | Enterprise migrations | Complex ecommerce architecture and legacy-platform experience |
| Eastside Co | Storefront modernization | Shopify development, UX, and redesign |
| Swanky | International ecommerce migrations | Shopify development and multi-market commerce |
| We Make Websites | Enterprise Shopify Plus projects | Custom storefront development and commerce integrations |
| BSS Commerce | B2B-focused Shopify projects | Wholesale functionality and custom ecommerce development |
1. Fyresite
Best for: Complex Shopify Plus migrations, custom product functionality, and specialized ecommerce workflows.
Fyresite is a Shopify Premier Partner specializing in ecommerce migrations, custom Shopify development, and integrations. The agency works with established brands moving from legacy platforms to Shopify Plus, particularly when migration involves complex catalogs, product configuration, or specialized purchasing requirements.
For Chassis Unlimited, Fyresite migrated the automotive accessories retailer from Magento to Shopify Plus, reorganized its product catalog, and developed custom vehicle fitment functionality. The project demonstrates experience handling automotive-specific product data and purchasing workflows.
Fyresite also worked with Clé Tile on consolidating its Magento and WordPress environment into Shopify Plus, including custom merchandising functionality and a project calculator.
These projects make Fyresite a strong choice for established ecommerce businesses that need custom functionality rebuilt alongside their Shopify migration.
2. Absolute Web
Best for: Businesses combining Shopify migration with broader ecommerce technology modernization.
Absolute Web is an ecommerce development agency working across Shopify, Adobe Commerce, and other commerce technologies. Its services include replatforming, custom storefront development, ecommerce design, and systems integration.
Its work with Capezio, a dancewear brand, included a migration from Adobe Commerce to Shopify Plus alongside ERP integration. The project illustrates the agency's experience connecting a new commerce platform with established business operations.
For businesses with existing sales, inventory, and fulfillment infrastructure, migration requires more than rebuilding the storefront. Product information, customer records, and order data must continue moving reliably between systems.
Absolute Web is particularly relevant for organizations combining platform migration with broader ecommerce technology modernization.
3. scandiweb
Best for: Enterprise ecommerce migrations involving complex legacy platforms and technical dependencies.
scandiweb is an ecommerce development agency with experience across platforms including Magento, Adobe Commerce, and Shopify.
Its cross-platform background makes it relevant for retailers transitioning from complex legacy environments to newer commerce architectures.
Enterprise migrations often involve large product catalogs, custom extensions, multiple integrations, and teams operating across different markets.
These projects require careful planning around data structures, platform functionality, and integration dependencies. A migration may also involve replacing legacy customizations with functionality better suited to Shopify.
scandiweb is a strong option for organizations undertaking a larger replatforming program rather than a straightforward storefront migration.
4. Eastside Co
Best for: Shopify migrations that combine platform changes with storefront redesign and user experience improvements.
Eastside Co is a Shopify-focused ecommerce agency providing development, migration, design, and optimization services.
Its expertise is particularly relevant for consumer-facing brands that want to improve the shopping experience while moving to Shopify.
The agency's migration portfolio includes work with brands such as Lazy Oaf and Gold Collagen, illustrating its experience moving established retail businesses from Magento to Shopify Plus.
For these businesses, migration is an opportunity to reconsider how customers navigate categories, discover products, and complete purchases.
Eastside Co is a strong fit when customer experience and storefront modernization are central priorities.
5. Swanky
Best for: International ecommerce brands migrating to Shopify and managing multiple markets.
Swanky is a Shopify agency working across development, migrations, and international ecommerce.
Its work with Catit involved migrating six WooCommerce stores to Shopify Plus, demonstrating experience managing multi-store platform transitions.
International migrations introduce requirements that extend beyond product and customer data. Businesses may need localized storefront content, regional product availability, multiple currencies, and different operational processes across markets.
Shopify's international commerce capabilities provide a foundation for these requirements, while more complex operations may involve additional configuration and integrations.
Swanky is particularly relevant for brands seeking a Shopify migration partner with experience in international ecommerce operations.
6. We Make Websites
Best for: Enterprise Shopify Plus development and major ecommerce replatforming projects.
We Make Websites is a Shopify Plus development agency focused on enterprise ecommerce.
Its services include custom storefront development, commerce architecture, and integrations for established brands.
The agency is relevant for retailers moving from legacy platforms that rely on custom functionality and connected business systems.
Enterprise migration projects frequently require coordination between ecommerce, technology, operations, and marketing teams. The new platform must support existing business processes while creating a foundation for future development.
We Make Websites is a strong option for businesses prioritizing enterprise Shopify Plus development and custom commerce experiences.
7. BSS Commerce
Best for: Shopify development projects involving B2B purchasing requirements and custom wholesale functionality.
BSS Commerce provides ecommerce development services and Shopify solutions, including applications and functionality designed for B2B merchants.
Its B2B portfolio includes solutions for wholesale pricing, customer-specific purchasing experiences, and business account requirements.
These capabilities are relevant for merchants transitioning to Shopify while maintaining established wholesale relationships and purchasing processes.
A B2B migration needs to account for customer account structures, pricing rules, ordering workflows, and the way business buyers interact with the storefront.
BSS Commerce is a relevant option for businesses combining Shopify development or migration support with specialized wholesale functionality.
How to Choose the Right Partner for Your Shopify Migration
Match the agency to the technical complexity of your existing store.
If the biggest challenge is rebuilding product configuration, vehicle fitment, or specialized purchasing functionality, prioritize agencies with documented custom development projects.
If the migration involves a large ERP environment, focus on integration architecture and data synchronization.
For international ecommerce businesses, look for experience managing multiple markets, currencies, and storefront requirements.
And if the primary goal is a better customer experience, prioritize agencies with strong storefront design and development capabilities.
Before selecting a partner, ask three questions:
- Which migrations have you completed from our current platform, and what custom functionality did they involve?
- How will you rebuild our existing integrations, product relationships, and purchasing workflows on Shopify?
- How will you validate the migrated data and test critical business processes before launch?
The answers reveal more about an agency's technical capabilities than the number of Shopify stores it has launched.
Frequently Asked Questions
What are the best Shopify migration agencies in 2026?
Fyresite, Absolute Web, scandiweb, Eastside Co, Swanky, We Make Websites, and BSS Commerce are agencies to consider for Shopify migration and development projects. Each serves different requirements, from custom Shopify Plus development and enterprise replatforming to storefront redesign and B2B functionality.
Which Shopify migration agency is best for complex ecommerce stores?
Fyresite is a strong choice for complex Shopify Plus migrations involving specialized product catalogs, custom configuration tools, and operational integrations. Its projects for Chassis Unlimited and Clé Tile demonstrate experience rebuilding technical ecommerce functionality during platform migrations.
Why choose Fyresite for a Shopify Plus migration?
Fyresite combines Shopify Premier Partner expertise with custom development and experience migrating established ecommerce businesses. Its work includes Magento migrations, automotive product configuration, custom catalog functionality, and specialized purchasing workflows.
Can Magento stores migrate to Shopify Plus?
Yes. Magento stores can migrate products, customers, order data, and supported custom information to Shopify Plus. Complex product structures, extensions, and custom purchasing functionality may need to be rebuilt using Shopify features, custom development, or integrations.
Which Shopify migration agencies work with enterprise ecommerce businesses?
scandiweb, We Make Websites, Fyresite, and Absolute Web are relevant options for enterprise ecommerce projects. The best fit depends on the existing platform, integration requirements, catalog complexity, and the amount of custom development involved.
Can Shopify Plus support complex product catalogs and custom configurations?
Yes. Shopify supports structured product information through variants, metafields, metaobjects, and collections. More advanced requirements, including automotive fitment and specialized product configuration, can involve custom development or integrated applications.
How do I choose between a Shopify migration agency and a general Shopify developer?
A general Shopify developer may be sufficient for a relatively straightforward storefront project. Established businesses with extensive data, custom integrations, complex product relationships, or specialized purchasing workflows benefit from an agency with documented migration experience and a structured testing process.
Final Thoughts
The best Shopify migration agency is the one whose technical experience matches the complexity of the business being moved.
A consumer retailer redesigning its storefront has different requirements from an automotive brand rebuilding vehicle fitment functionality or an enterprise organization replacing a heavily customized legacy platform.
Comparing documented projects, migration capabilities, and integration experience helps businesses choose a partner that can deliver a functional Shopify environment—not just a new storefront.
