10 Best Shopify Migration Agencies in the USA 2026

Replatforming to Shopify or Shopify Plus in 2026 isn’t “move the data and flip the switch.”

For most DTC and retail brands, the wrong migration partner means lost SEO, broken tracking, angry customers, and months of firefighting while your team burns through budget and runway.

The right partner treats migration as a revenue-critical project, not just a dev task. Done well, a move from Magento, BigCommerce, WooCommerce, or a custom cart to Shopify should:

• Protect your organic traffic and rankings
• Keep products, customers, orders, and content intact
• Plug in your real tech stack (ERP, CRM, subscriptions, reviews, analytics) without drama
• Give shoppers a faster, cleaner, higher-converting storefront

Instead of wading through endless partner directories and Clutch profiles, this guide highlights 10 Shopify migration agencies in the USA we’d actually short-list for a serious B2C/DTC replatform.

Start here, then pick 2–3 to have real conversations with.

Commerceshop

CommerceShop (The Commerce Shop) is a Shopify migration and eCommerce development agency founded in 2009. It has delivered 500+ Shopify stores and completed 200+ successful migration projects for ecommerce brands across multiple industries. 

The agency delivers Shopify and Shopify Plus migrations using a structured, risk-controlled replatforming process built to protect SEO equity, preserve critical store data, and execute a stable cutover. CommerceShop provides Magento to Shopify migration services and supports migrations from other commerce platforms to Shopify. 

Customer Review “They’ve never turned down a challenge and resolved problems even the most seasoned developers have yet to encounter.” – Marketing Director, Vape Craft LLC (custom migration project)

Best for

• High-stakes Shopify and Shopify Plus migrations, where SEO and revenue must be protected
• Magento to Shopify migration replatforms with complex data and a long order history
• Brands that want migration plus Shopify development and customization, theme implementation, app, and third-party integrations. 
• Stores with heavy ERP, CRM, subscription, reviews, and analytics integrations
• Teams that need SEO-safe migrations, structured QA, and Ongoing maintenance and support

Why It Stands Out

CommerceShop frames migration as an end-to-end process (not just data transfer), and promotes an AI-powered migration framework aimed at reducing downtime and preventing common SEO/data loss during replatforming.

Arctic Grey

Arctic Grey is a Shopify and Shopify Plus design and development firm founded in 2015. It is positioned as a Shopify-focused agency for enterprise and growth-stage merchants, with work spanning new store builds, redesigns, and migrations from Magento, BigCommerce, WooCommerce, Salesforce, Lightspeed, NetSuite, and other platforms to Shopify.

The agency delivers Shopify migrations covering replatforming, data migration, custom theme development, UX/UI implementation, and integrations with ERP, POS, and marketplace systems for D2C, B2B, and omnichannel operations.

Customer Review “They combined professionalism, technical expertise, and clear communication.” – Owner/Founder, Sisterhood Supplements LLC

Best for

• Design-driven Shopify and Shopify Plus storefronts
• Enterprise and growth-stage brands
• Migrations that include a full UX and theme overhaul
• Stores with ERP, POS, and marketplace integrations
• Merchants that prioritize uptime and smooth cutovers

Why It Stands Out

Arctic Grey concentrates on Shopify and Shopify Plus projects with structured migration offerings, including a risk-free trial migration and a zero-downtime guarantee, plus multi-system integration capabilities for merchants that require ERP, POS, and marketplace connectivity around their Shopify stack.

Codal

Codal is a digital commerce and Shopify Plus development agency headquartered in the United States, serving mid-market and enterprise brands. The agency positions itself as a Shopify Plus partner focused on complex commerce builds, large-scale migrations, and conversion-focused digital experiences.

Customer Review “Codal delivered a polished product and maintained clear communication throughout the project.”

Best for

• Enterprise Shopify Plus replatforming
• Complex catalogs and multi-site setups
• Brands combining migration with broader digital redesign
• Deep ERP, CRM, and third-party integrations
• Teams that want UX strategy plus custom development

Why It Stands Out

Codal combines Shopify Plus implementation with broader digital product expertise, positioning migrations as part of a larger digital transformation initiative rather than a standalone platform switch.

Uncap

Uncap is a Shopify-focused ecommerce agency and Shopify Platinum Partner that delivers structured replatforming and Shopify Plus solutions, especially for B2B, distribution, and enterprise brands. 

The agency provides migration services that encompass full data transfer, UX design, custom development, integrations, and launch support for merchants moving to Shopify/Shopify Plus.

Customer Review “They were very good communicators and were extremely professional.” – Project Manager, E3 Spark Plugs (E-commerce development & Shopify migration project)

Best for

• B2B, distribution, and manufacturing brands
• Shopify Plus builds with complex account workflows
• Migrations from legacy B2B platforms to Shopify
• ERP and CRM heavy integration scenarios
• Teams needing scalable, enterprise-grade architecture

Why It Stands Out

Uncap combines replatforming with deeper B2B and enterprise commerce capabilities, including custom integrations and scalable Shopify Plus architecture.

Electric Eye

Electric Eye is a Shopify and Shopify Plus agency that delivers migrations, redesigns, and optimization work for brands moving from other ecommerce platforms to Shopify. Their migration services include data and content transfer, responsive design, development, launch support, and post-launch growth services.

Customer Review “Electric Eye has given me a better site than I could have imagined…” – Steve Sando, Rancho Gordo

Best for

• DTC brands seeking a higher-converting Shopify store
• Migrations that pair platform move with UX cleanup
• Brands moving off legacy or DIY platforms
• Lean ecommerce teams wanting an ongoing optimization partner
• Stores focused on storytelling and brand experience

Why It Stands Out

Electric Eye emphasizes a full migration experience that pairs platform transition with UX design and post-launch support, backed by client testimonials and a portfolio of stores built since 2016.

1Digital® Agency

1Digital® Agency is an ecommerce solutions provider offering comprehensive platform migration, design, development, SEO, and digital marketing services. The agency’s platform migration services include Magento, WooCommerce, and BigCommerce to Shopify transitions with a focus on data integrity and minimal disruption. They pair migration execution with ongoing optimization and growth-oriented services.

Customer Review “The end result and smoothness of the migration far exceeded our expectations.” – Client feedback on migrating from WooCommerce to Shopify

Best for

• Full ecommerce platform migrations (Magento, WooCommerce, BigCommerce to Shopify)
• Data mapping and secure transfer
• Custom Shopify theme design and development
• SEO and performance optimization
• Teams looking for long-term ecommerce strategy support

Why It Stands Out

1Digital® blends migration execution with broader ecommerce strategy and digital marketing, supporting both platform transition and long-term growth objectives.

Bighorn Web Solutions

Bighorn Web Solutions is an ecommerce development agency with experience in Shopify and Magento site projects, including migrations, custom development, integrations, and optimization work. Reviews highlight their ability to adapt to evolving priorities and deliver quality responses to technical challenges.

Customer Review “Their responsiveness to our needs has been commendable.” – Clutch Review

Best for

• Technically complex Shopify and Shopify Plus builds
• Magento and custom stack modernizations
• Stores with ERP and fulfillment integrations
• Brands that value performance and clean architecture
• Teams that need hands-on technical problem-solving

Why It Stands Out

Bighorn Web Solutions focuses on delivering technically solid, scalable ecommerce solutions with clean architecture and performance-oriented builds.

Ambaum

Ambaum is a Shopify Plus Partner agency built by former merchants and operators, providing technical leadership, strategy, and scalable commerce infrastructure on Shopify Plus. The agency works with growth-stage and enterprise brands to support migrations, custom builds, integrations, and long-term development retainers.

Customer Review “They are always communicating and making sure everyone is on the same page.” – Chet Waldron, VP of Information Systems

Best for

• High-growth Shopify Plus merchants
• Brands needing fractional CTO-style guidance
• B2B and hybrid B2B/B2C stores
• Long-term development retainers and roadmap work
• Teams that treat Shopify as core infrastructure

Why It Stands Out

Ambaum combines operational experience with development expertise, offering strategic guidance and technical execution for growing ecommerce brands on Shopify Plus.

Fyresite

Fyresite is a Shopify Plus agency specializing in custom ecommerce solutions, migrations, and advanced integrations with a strong focus on B2B functionality, workflow automation, and wholesale operations on Shopify Plus. The agency supports complex B2B ecommerce migrations with custom development and feature work.

Best for

• B2B and wholesale on Shopify Plus
• Migrations that require custom apps or features
• Complex pricing, account, and checkout rules
• POS, fulfillment, and automation-heavy setups
• Brands needing advanced workflows without losing UX quality

Why It Stands Out

Fyresite blends deep technical capability with commerce usability, supporting both data-focused migrations and advanced B2B workflows on Shopify Plus.

Avex (AVEX Designs)

AVEX is a New York-based Shopify and Shopify Plus agency focused on strategy, design, engineering, and replatforming for growth-stage and enterprise brands. The agency positions migrations as broader commerce transformations, with support for UX redesign, backend integrations, and post-launch performance improvements.

Customer Review “Their level of professionalism is quite high. I liked the way they approached the whole project.” – President, Berry Jewelry

Best for

• Enterprise and upper mid-market Shopify Plus replatforms
• Brands combining migration with UX, CRO, and systems modernization
• DTC, retail, and B2B teams needing unified commerce architecture
• Stores with ERP, CRM, WMS, and 3PL integration requirements
• Teams that want a senior-led strategy + design + engineering partner

Why It Stands Out

AVEX frames Shopify migration as a system-level transformation, not a simple lift-and-shift. Their Shopify pages explicitly emphasize replatforming, data integrity, preserved SEO, operational continuity, and integration-heavy Shopify Plus environments.

How To Choose The Right Partner

The right migration partner should make your move to Shopify feel controlled, predictable, and commercially smart. Use this quick filter to shortlist agencies:

Match for your scenario

Check their “Best for” against your reality: current platform (Magento/BigCommerce/WooCommerce/custom), catalog size, DTC vs B2B, and revenue band.

Look for real migration proof

Prioritize named platform → Shopify case studies, not just “Shopify builds.” Ask for 1–2 recent replatforming references.

Lead with SEO + data, not just design

Ask:

How do you handle redirects and metadata?Who owns data mapping and validation?What’s your process the week of launch?

Clarify integrations and ownership

Put your stack on the table (ERP, CRM, subscriptions, WMS, reviews, analytics). Confirm which pieces they’ve handled before and who is responsible for what.

Lock scope, timeline, and support

Align on launch scope, timeline, change-control, and post-launch support (response times, what’s included, when the handoff ends).

Conclusion

Replatforming is one of the few moves that can reset your ecommerce trajectory in a single project. Get it right, and you keep your SEO, clean up years of tech debt, and give shoppers a faster, higher-converting store on Shopify or Shopify Plus.

This list of Top 10 Shopify Migration Agencies in the US is meant to save you from scrolling endless partner directories and generic sales pitches. Each agency here has a real migration history, clear strengths, and client feedback you can actually look up.

Ready to plan your Shopify migration?

If you want to replatform without losing SEO, data, or revenue, our Shopify team can help you scope and plan the migration properly. We have led 200+ migrations and 500+ Shopify builds for DTC and retail brands.

Book a consultation

FAQs about Shopify Migration

1. Do we really need a specialist agency for Shopify migration?

If you have real traffic, orders, and integrations, yes. Migration is a revenue and operations project, not just a data export. A specialist has a tested process for SEO, data, and launch, so you are not learning on production.

2. How long does a Shopify migration usually take?

Most serious migrations take 8 to 16 weeks. Timing depends on catalog size, design scope, integrations, and how quickly your team can review and approve.

3. How do we avoid losing SEO when we move to Shopify?

You need a clear SEO plan: URL and redirect mapping, metadata migration, handling removed URLs, and post-launch checks for 404s and indexing. SEO should be a core workstream from day one.

4. What data should be migrated to Shopify?

At minimum: products, collections, customers, orders, pages, blogs, and key SEO fields. Many brands also offer reviews, gift cards, store credit, and subscriptions. Create a data inventory and confirm how each item will be handled.

5. Can we keep our current design when migrating?

Yes. You can mirror your current design in a Shopify theme with small fixes, or use the move for a focused UX refresh. Many brands keep the core brand look and upgrade PDP, navigation, cart, and checkout.

6. What should we ask agencies on the first call?

Ask about a recent migration from your platform to Shopify, how they handle SEO and redirects, who owns data mapping, and which of your key integrations they have done before. Then ask what launch week looks like with their team.