Top 15 BigCommerce Migration Agencies in the US (2026)

Table of Contents

1. What Separates Good BigCommerce Migration Agencies From Great Ones
2. Quick Comparison: Top 15 BigCommerce Migration Agencies at a Glance
3. Top 15 BigCommerce Migration Agencies in the US (2026)
4. How to Choose the Right BigCommerce Migration Agency
5. Why CommerceShop Stands Apart for Brands That Measure Migration Success by Revenue
6. Frequently Asked Questions

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Replatforming to BigCommerce is one of the highest-stakes decisions a growing brand makes. A well-executed migration unlocks faster performance, better conversion infrastructure, and a scalable foundation. A poorly managed one destroys organic rankings, corrupts customer data, and triggers months of costly recovery.

This guide covers 15 US-based BigCommerce migration agencies — who each one is best suited for, what they’re known for, and where they stand on the capabilities that move the needle most. Whether you’re migrating from Magento, Shopify Plus, Salesforce Commerce Cloud, or a custom platform, use this list to shortlist the right BigCommerce implementation partner for your specific situation.

What Separates Good BigCommerce Migration Agencies From Great Ones

Most BigCommerce development companies deliver implementation: data migration, redirect mapping, integrations, and a working storefront at launch. That’s the floor — table stakes for any credible BigCommerce partner in the US.

What separates leading agencies is whether they treat migration as the start of a revenue growth program, or the end of an IT project. Agencies that integrate CRO, AI-driven behavior analysis, and growth strategy into their migration practice consistently deliver better commercial outcomes than those that offer it as an optional add-on after go-live.

The six criteria below are ordered by business impact — not by what agencies typically lead with in their sales decks.

1. Integrated CRO and growth methodology — Is conversion optimization built into the migration engagement, or offered as a separate retainer post-launch? This is the single highest-impact differentiator between agencies on this list.

2. AI-driven analysis capability — Can the agency use AI tooling to analyze your user behavior, funnel performance, and merchandising data to inform both migration decisions and post-launch optimization?

3. BigCommerce platform depth — Partner tier, years on the platform, and completed migration volume. Elite Partner status signals platform expertise and a direct BigCommerce relationship.

4. Migration methodology — Structured data migration processes, URL and redirect strategy, SEO continuity planning, and catalog complexity handling.

5. Technical breadth — Custom app development, ERP/OMS/CRM integrations, and headless or composable architecture capability.

6. Post-launch engagement model — Defined SLAs, retainer availability, and ongoing optimization — not just a handoff.

The one question to ask every shortlisted agency: “How is CRO built into your migration engagement — not as an upsell, but as a core deliverable?” The answer immediately separates leading agencies from capable ones.

Quick Comparison: Top 15 BigCommerce Migration Agencies at a Glance

Top 15 BigCommerce Migration Agencies in the US (2026)

1. CommerceShop (The Commerce Shop) — Atlanta, GA | BigCommerce Migration + CRO + AI Growth

CommerceShop is a full-service BigCommerce migration and CRO agency built around a single outcome: revenue growth on the other side of the replatform. Their practice combines platform migration, conversion rate optimization, and AI-driven analysis of user behavior and merchandising performance in one integrated engagement — not as separate services stitched together after launch.

Migration strategy and post-launch conversion improvement are designed by the same team from day one. By the time the new BigCommerce store goes live, funnel analysis is already running and the CRO framework is already in motion. Clients have seen documented lifts in revenue, order volume, and units sold following their migrations — numbers the team treats as the primary measure of a successful engagement, not go-live date.

CommerceShop serves DTC and B2B brands across diverse verticals. Their model is best suited for brands where post-migration revenue performance is the central business case for replatforming.

Key reasons to consider CommerceShop:

• Migration, CRO, and AI-driven growth analysis structured as a single engagement
• Funnel and merchandising analysis built in before go-live — not scoped after
• Documented post-migration revenue, order volume, and units-sold outcomes
• Serves DTC and B2B brands across multiple verticals
• Senior-led delivery with growth outcomes as the primary accountability metric

2. 1Digital Agency — Philadelphia, PA | BigCommerce Migration & SEO Specialist

1Digital Agency has built a high-volume BigCommerce migration practice with clear strength in SEO-safe replatforming. Their team has executed a large number of platform transitions — Magento to BigCommerce being their most documented path — with structured processes for preserving organic search traffic through the switch.

Their approach to redirect mapping, metadata preservation, and technical SEO continuity is methodical and well-documented. For brands where organic search is the primary revenue channel and in-house SEO resources are limited, this is where they earn their spot on the list.

Key reasons to consider 1Digital Agency:

• High-volume BigCommerce migration experience with a structured SEO continuity process
• Strong Magento-to-BigCommerce transition track record
• Transparent project management with defined timelines and milestones
• Best fit when organic traffic protection is the primary migration risk

3. Americaneagle.com — Des Plaines, IL | Enterprise-Grade BigCommerce Implementations

Americaneagle.com is a full-service digital agency with Elite BigCommerce Partner status and extensive enterprise delivery infrastructure, operating since 1995. Their team manages large, multi-workstream projects with dedicated project governance, structured QA, and a wide bench of technical and marketing specialists across development, design, and paid channels.

They are well-positioned for organizations navigating complex stakeholder environments, multi-system integration requirements, and a need for complementary digital services under one roof.

Key reasons to consider Americaneagle.com:

• Elite BigCommerce Partner with enterprise-grade project governance
• Deep ERP, CRM, and PIM integration experience
• Full-service delivery: development, design, hosting, SEO, and paid media
• Best fit for large organizations with multi-system complexity and governance overhead

4. Codal — Chicago, IL | Elite BigCommerce Partner, Two-Time Agency of the Year

Codal is the only two-time BigCommerce Agency Partner of the Year (2021 and 2023), with back-to-back User Experience & Design award wins. They hold Elite Partner status with BigDev Certification and BigCommerce B2B Specialization, and operate globally with offices in the US, UK, Canada, and India. Their practice leads with UX research and experience strategy before development begins.

They are the right choice when UX quality, enterprise scale, and platform certification depth are the primary replatforming priorities.

Key reasons to consider Codal:

• Two-time BigCommerce Agency Partner of the Year (2021 and 2023)
• Elite Partner: BigDev Certified and B2B Specialized
• UX strategy and user research integrated into every migration and build
• Enterprise ecommerce, headless, and composable architecture capability
• Global delivery across B2B and B2C at scale

5. Groove Commerce — Baltimore, MD | Elite BigCommerce Partner With Growth Focus

Groove Commerce holds Elite BigCommerce Partner status and integrates ecommerce development with digital marketing more tightly than most agencies on this list. Their proprietary Velocity launch framework accelerates time-to-market, and their Diamond HubSpot Agency status creates a strong foundation for post-launch email automation and lifecycle marketing.

Post-migration growth support is primarily marketing-led — SEO, paid, and email — rather than CRO-first experimentation. Strong fit for brands where marketing execution post-launch is the growth priority.

Key reasons to consider Groove Commerce:

• Certified Elite BigCommerce Partner; founded 2007
• Velocity framework for faster BigCommerce launches
• Diamond HubSpot Agency — strong post-launch marketing automation
• Integrated development and digital marketing under one roof
• Best fit when post-launch marketing is the primary growth driver

6. Zaelab (formerly Trellis) — Malden, MA | Integration-Heavy BigCommerce Migrations

Trellis — now operating as Zaelab following an acquisition in November 2024 — is an Elite BigCommerce Partner with deep experience in technically complex migrations, headless builds, and B2B commerce. Their dedicated BigCommerce squads handle layered tech stacks, custom pricing logic, account hierarchy requirements, and catalog complexity that standard agencies frequently underscope.

They are a solid choice for mid-to-large brands where integration depth or headless architecture is the defining technical requirement of the replatform.

Key reasons to consider Zaelab (Trellis):

• Elite BigCommerce Partner with headless and composable architecture experience
• B2B expertise: custom pricing, account hierarchies, quote workflows
• Dedicated BigCommerce engineering squads for complex builds
• Note: Trellis was acquired by Zaelab in November 2024 — confirm team continuity in discovery

7. Optimum7 — Coral Gables, FL | Complex, Data-Heavy BigCommerce Replatforming

Optimum7 focuses on technically demanding migrations — large product catalogs, complex data structures, and custom functionality requirements that standard agencies frequently underscope. Their team is experienced with edge cases that surface on legacy and heavily customized platforms, and their data migration documentation process is thorough.

They are well-matched for brands on Magento, Volusion, or custom-built platforms where data fidelity and feature parity are the dominant migration concerns.

Key reasons to consider Optimum7:

• Deep experience managing large, structurally complex catalog migrations
• Custom development capability for edge cases on legacy platforms
• Thorough data migration documentation and validation
• Best fit when catalog and data complexity are the primary migration risks

8. Absolute Web — Miami, FL | Design-Driven BigCommerce Storefronts

Absolute Web brings a design-forward approach to BigCommerce development, with a track record in DTC and brand-led ecommerce verticals where front-end execution is a commercial differentiator. Their work is known for high-quality visual design paired with solid technical delivery, and they offer post-launch support options for ongoing maintenance.

They are the right fit for brands in fashion, lifestyle, or consumer goods where brand expression and front-end quality are the primary replatforming goals.

Key reasons to consider Absolute Web:

• High-quality creative and visual design for BigCommerce storefronts
• Solid technical migration and development execution
• Established track record in DTC, fashion, and lifestyle ecommerce
• Best fit when brand aesthetics and front-end experience are the priority

9. IntuitSolutions — Philadelphia, PA | Elite BigCommerce Partner, B2B Specialized Since 2009

IntuitSolutions has operated on BigCommerce since the platform’s 2009 inception and has held Certified Elite Partner status since 2012. They achieved BigCommerce B2B Specialization — a certification held by fewer than 4% of BigCommerce-certified agencies globally — and their proprietary Ebizio product line provides app-based solutions that extend standard BigCommerce functionality. Their 100% US-based team serves B2B and B2C brands across regulated and complex verticals.

Key reasons to consider IntuitSolutions:

• On BigCommerce since 2009; Certified Elite Partner since 2012
• BigCommerce B2B Specialization — held by fewer than 4% of agencies globally
• Proprietary Ebizio app suite for extended B2B BigCommerce functionality
• Experience in regulated verticals: firearms, alcohol, automotive
• 100% US-based team, no outsourcing

10. Mira Commerce — Petaluma, CA | Enterprise BigCommerce Integrations & Migrations

Mira Commerce handles complex enterprise migrations with a strong focus on back-office integration — ERP, OMS, PIM, and CRM. Their strength is system architecture and integration stability at scale. Their structured discovery and project governance process reduces risk on engagements where the back-office environment is the most complex variable.

They suit organizations with established operational infrastructure that needs clean, reliable integration into a new BigCommerce environment.

Key reasons to consider Mira Commerce:

• Enterprise-level systems integration experience on BigCommerce
• Structured multi-system migration architecture
• B2B commerce and large catalog structure experience
• Best fit when back-office integration complexity is the dominant migration risk

11. Guidance — Los Angeles, CA | Large-Scale BigCommerce Replatforming

Guidance is an Elite BigCommerce Partner with a track record running large, multi-stakeholder replatforming projects. Their team brings maturity in cross-functional delivery — managing development, design, and marketing workstreams in parallel — with structured project governance suited to brands with significant organizational complexity around the migration.

They are best positioned for larger brands or those requiring a full-service digital agency alongside their replatform.

Key reasons to consider Guidance:

• Elite BigCommerce Partner with enterprise-adjacent delivery experience
• Mature project governance for complex, multi-workstream migrations
• Full-service capability: strategy, development, design, and marketing
• Best fit for larger brands with organizational complexity around migration

12. Silk Commerce — Irvine, CA | Global & Multi-Region BigCommerce Implementations

Silk Commerce specializes in multi-region and global BigCommerce implementations — multi-storefront, multi-currency, cross-border catalog architecture, and localization. This is a narrow but important specialization. Their practice is built specifically around the complexity that international operations introduce to a BigCommerce migration.

They are the right fit for brands with active international markets or near-term global expansion plans where migration architecture must account for scale from the start.

Key reasons to consider Silk Commerce:

• Multi-region and multi-storefront BigCommerce specialization
• Cross-border commerce: currency, tax, and localization architecture
• Technical depth for global catalog and pricing structures
• Best fit for brands with international markets or global expansion in scope

13. Brainvire — Dallas, TX | BigCommerce + ERP/CRM Integration at Scale

Brainvire brings significant technical resources to BigCommerce ERP and CRM integration projects. Their large team is experienced at scale across system integration disciplines, making them capable when back-office connectivity is the defining challenge of the replatform — not a secondary consideration.

They are well-matched for organizations where integration architecture carries as much project risk as the storefront itself.

Key reasons to consider Brainvire:

• Large technical team with deep ERP and CRM integration expertise
• BigCommerce migration at enterprise scale
• Structured integration architecture and QA processes
• Best fit for back-office-first replatforming projects at scale

14. Coalition Technologies — Los Angeles, CA | SEO- and Performance-Led BigCommerce Builds

Coalition Technologies integrates organic search expertise directly into their BigCommerce technical practice. SEO implications are built into the migration architecture — not layered on after launch. Performance optimization and Core Web Vitals compliance are embedded in their build standards, and post-launch SEO retainers extend the organic investment.

They are the strongest choice when organic search is a primary revenue channel and technical SEO risk during migration must be systematically managed.

Key reasons to consider Coalition Technologies:

• Integrated SEO and development reduces organic traffic risk during migration
• Performance optimization and Core Web Vitals built into build standards
• Post-launch SEO retainer options for ongoing organic growth
• Best fit when protecting and growing organic search is the central migration objective

15. McFadyen Digital — Vienna, VA | BigCommerce for Enterprise B2B & Marketplace Strategy

McFadyen Digital joined BigCommerce’s Agency Partner Program in August 2024 with BigDev Certified status and released SmartLaunch — a pre-configured accelerator for BigCommerce B2B Edition targeting distributors, wholesalers, and manufacturers. With nearly 30 years in enterprise commerce strategy, they are included in Forrester’s Commerce Services Landscape Q3 2025 and bring composable and marketplace architecture expertise to BigCommerce engagements.

They are best suited for enterprise organizations exploring B2B digital transformation on BigCommerce or evaluating marketplace and composable commerce models.

Key reasons to consider McFadyen Digital:

• Nearly 30 years of B2B and enterprise commerce experience
• SmartLaunch accelerator for BigCommerce B2B Edition deployments
• Composable and marketplace architecture expertise applied to BigCommerce
• Included in Forrester’s Commerce Services Landscape, Q3 2025
• Best fit for enterprise B2B and marketplace-model replatforms

How to Choose the Right BigCommerce Migration Agency

The right choice depends on your migration objective, not the agency’s reputation or size.

A practical 6-step selection checklist:

1. Define your primary success metric — Revenue lift, organic traffic, B2B feature parity, or launch speed. This determines which agency type you actually need.
2. Map non-negotiable integrations — Every system (ERP, OMS, CRM, PIM, loyalty, reviews) that must connect on day one.
3. Audit your SEO exposure — Identify top-traffic URLs, highest-converting pages, and structured data before any agency conversation begins.
4. Shortlist by specialization — Partner tier and agency size matter less than whether their proven specialty matches your migration type.
5. Run structured RFPs with scenarios — Include a sample data migration challenge and ask explicitly about post-launch SLAs.
6. Ask the CRO question — “How is conversion optimization built into your migration engagement?” A vague answer is a disqualifier.

Why CommerceShop Stands Apart for Brands That Measure Migration Success by Revenue

Most BigCommerce migration agencies measure success by launch day. The store is live, the data migrated cleanly, the redirects are in place — project closed.

CommerceShop measures success differently. Their benchmark is revenue performance at 30, 60, and 90 days post-launch. That single difference in how success is defined shapes how every stage of their migration engagement is structured.

The same team handling migration is simultaneously analyzing funnel behavior, mapping conversion gaps, and building the CRO framework that activates the moment the new store goes live. There is no hand-off to a separate growth team. No waiting period before optimization begins. The migration architecture itself is informed by conversion data from the start.

AI-driven analysis of user behavior, merchandising performance, and funnel leaks is built into the engagement — not available as a premium add-on. The result is a new BigCommerce store designed around how your actual customers behave, not what general best practices suggest.

For brands where the business case for replatforming is tied to revenue improvement — not just a technical upgrade — this model is the most direct path to that outcome.

Frequently Asked Questions

What is the best BigCommerce migration agency in the US?

The answer depends on what you’re optimizing for. For brands where post-migration revenue growth is the primary objective, CommerceShop leads — they are the only agency that integrates CRO and AI-driven growth analysis into the migration engagement itself as a core practice. 

What does a BigCommerce migration agency do?

A BigCommerce migration agency manages the end-to-end process of moving your store — products, customer records, order history, URLs, and integrations — to BigCommerce. This includes data migration, redirect mapping, SEO continuity, custom development, integration setup, UAT, and post-launch support.

How long does a BigCommerce migration take?

Most mid-market BigCommerce migrations take 8 to 20 weeks, depending on catalog size, integration complexity, and custom development volume. 

How do I protect SEO rankings during a BigCommerce migration?

SEO protection requires a full URL audit before migration, a comprehensive 301 redirect map, metadata and structured data preservation, and post-launch crawl error monitoring. The agency must treat SEO migration as a dedicated technical workstream — not a post-launch checklist item. 

What should a BigCommerce migration proposal include?

A credible proposal includes: a discovery and audit phase, a data migration plan with validation steps, a URL and redirect strategy, an integration scope with defined dependencies, a UAT and QA process, a post-launch support SLA, and milestones with ownership assigned. Proposals that skip discovery or omit SEO continuity planning are warning signs.

How much does a BigCommerce migration cost for mid-market brands?

Mid-market BigCommerce migrations typically range from $30,000 to $150,000, depending on catalog size, integration complexity, custom development scope, and whether CRO work is included. Straightforward replatforms run at the lower end. Magento migrations with integrations and CRO workstreams run significantly higher. The cost of launching without CRO typically far exceeds the cost of including it in scope.

Can a BigCommerce migration agency also support post-launch revenue growth?

Yes — and it’s the most important capability question to ask. Agencies that integrate CRO into the migration itself produce faster post-launch revenue improvement than those offering it as a separate follow-on engagement. The delay between go-live and first CRO optimization is where most migration revenue is lost.