Shopify Migration & Replatforming Services
Move your storefront, data, and connected operations to Shopify with a launch plan your team can verify. SDG scopes and delivers enterprise migrations with data rehearsals, integration testing, SEO controls, and cutover support. We are a Shopify Platinum Partner and have worked on the platform since 2006.
Trusted by brands that define their categories
A Shopify replatforming plan built around launch controls
SDG plans and delivers Shopify migration services the way enterprise teams run a system cutover: inventories, dependencies, data rehearsals, integration tests, rollback criteria, and a launch sequence designed to limit disruption. The visible storefront matters, but the migration succeeds or fails in the operating detail behind it.
Need the planning framework before selecting a delivery partner? Use our enterprise Shopify replatforming guide. This page is for teams scoping the migration service, delivery model, and accountable launch support.
Our Barnes & Noble replatform moved a massive retail catalog onto Shopify at a scale few teams would attempt. That is the standard we bring to every move: calm launch mechanics, protected data, protected search equity, and a platform your team can move faster on after go-live.
What a Shopify migration agency should own
A Shopify migration agency should be accountable for more than importing products or rebuilding templates. SDG owns the connected program: discovery, target architecture, catalog and customer data, storefront delivery, ERP and OMS integrations, URL redirects, analytics, quality assurance, launch rehearsal, cutover, and post-launch stabilization.
That ownership matters because migration failures cross disciplines. A product-model decision changes merchandising and integrations. A late URL decision puts organic traffic at risk. An order-flow gap affects finance and fulfillment. We keep one senior team accountable across those dependencies, with named owners, evidence-based launch gates, recovery paths, and a runbook the operating team can use after go-live.
If you are still defining requirements, start with the enterprise replatforming playbook. If you need a team to own delivery, SDG’s Shopify migration agency is built for the complete program.
What must be signed off before a Shopify cutover?
Discovery should turn launch risk into an acceptance plan. The exact thresholds and responsibilities depend on your scope; agree on them before implementation, then collect evidence during rehearsals.
Data and merchandising
Compare source and destination counts, identifiers, required fields, prices, inventory rules, media, and representative records. Record exceptions rather than hiding them in a successful import total. Your merchandising and operations owners approve the reconciled data and the final change-freeze plan.
Orders and connected systems
Exercise the agreed purchase, payment, tax, fulfillment, cancellation, return, and customer-service scenarios. Trace representative orders into the ERP or OMS, test failure recovery, and identify who owns unresolved exceptions. A working storefront alone is not operational sign-off.
Search, measurement, and launch ownership
Validate priority redirects and landing pages, check crawl access and canonical URLs, and verify the agreed analytics events. The cutover runbook should name the launch decision-maker, DNS owner, integration owners, monitoring responsibilities, and conditions for pausing or recovering the launch.
Use our enterprise discovery audit to define the scope, or bring your current platform, catalog size, system list, target date, and known constraints to a migration scoping conversation.
Platforms we migrate from
We migrate brands to Shopify and Shopify Plus from Magento and Adobe Commerce, Salesforce Commerce Cloud (SFCC/Demandware), Oracle ATG, Adobe Experience Manager, BigCommerce, WooCommerce, custom platforms, homegrown headless stacks, and legacy ecommerce systems. Each source platform has different data models, URL patterns, integration assumptions, and operational habits, so the plan changes accordingly.
For deeper planning detail, start with our enterprise Shopify replatforming guide, explore our commercial SFCC-to-Shopify migration service, then use the source-platform guides for Magento, Salesforce Commerce Cloud (SFCC), Oracle ATG, Adobe Experience Manager, and custom platforms. For a team moving from a custom headless storefront to a Shopify theme, see our headless-to-headed migration service.
Catalog, data, and content migration
A Shopify migration is more than a theme. We move products, variants, customers, order history, content, media, redirects, page metadata, and the structured data that drives merchandising, search, and service. We decide what belongs in Shopify native fields, what belongs in metafields or metaobjects, what should stay in a PIM or CMS, and what should finally be retired.
The migration is validated and reconciled, because silent data loss is one of the most expensive ways a replatform can fail. Customer service, finance, merchandising, and operations all need to trust the new platform on day one.
Protect your SEO through cutover
Migrations are where organic traffic gets lost. We crawl the existing site, export high-value landing pages from analytics and Search Console, review backlinks, map old URLs to new Shopify destinations, preserve canonical signals and structured data, update internal links, submit clean sitemaps, and monitor crawl/index status after launch.
The goal is not to preserve every old URL forever. The goal is to preserve the equity that matters and remove the technical debt that does not. That distinction is what separates a real SEO-safe migration from a bulk redirect spreadsheet.
Re-integrating the business behind the storefront
A migration is only complete when the business can operate on the new platform. We re-wire ERP, OMS, PIM, CRM, tax, payments, subscriptions, loyalty, reviews, analytics, consent, and fulfillment systems so orders, inventory, customer data, and finance stay consistent. Explore our Shopify integrations practice and our Shopify ERP integration guide for the systems layer.
What happens after launch
Launch is the start of the new platform, not the end of the work. We watch redirects, crawl errors, indexation, analytics, consent, checkout, conversion, performance, and operational queues during the stabilization window. Then we move into the work a migration should unlock: faster merchandising, CRO, new markets, B2B, POS, accessibility, and support.
Explore our case studies, our Shopify Plus agency for enterprise brands, or our Magento to Shopify migration service page. For channel-specific programs, use the Shopify POS implementation guide or the Global-e to Shopify Markets guide.
Everything your store needs, from one senior team
SDG is a full-service Shopify partner. The same senior engineers and designers behind enterprise replatforms also take on focused projects, ongoing support, and everything in between — for brands large and small. One accountable team, end to end.
Strategy & architecture
Platform evaluation, TCO, roadmaps, and technical architecture grounded in two decades on Shopify.
UX/UI design
Brand-led storefront design and interface work, engineered to convert as well as it looks.
Storefront development
Theme and fully custom front-end builds, from a single template to a complete storefront.
Headless & composable
Hydrogen, Oxygen, and custom React storefronts engineered to hit performance budgets others miss.
Replatforming & migrations
Moves onto Shopify and Shopify Plus with reconciled data, cutover rehearsals, and recovery planning for complex retail catalogs.
Systems & data integration
ERP, OMS, PIM, CRM, and bespoke middleware — the back-office systems global retail runs on.
Performance engineering
Core Web Vitals, speed, and reliability treated as a baseline, not an afterthought.
Shopify SEO
Technical SEO, site architecture, and structured data so the right buyers find your store.
CRO & experimentation
Conversion-rate optimization and A/B testing that turn existing traffic into more revenue.
Support & retainers
Ongoing monthly support, maintenance, and enhancement — a senior team on call for your store.
Accessibility
WCAG-compliant builds and audits, so your storefront works for every customer.
Apps & custom functionality
Custom Shopify apps, checkout extensions, and bespoke features the platform doesn’t ship out of the box.
Frequently asked questions
What is Shopify replatforming?
Replatforming is moving an existing store onto Shopify or Shopify Plus from another platform, including catalog, customer and order data, content, design, and back-office integrations, ideally without downtime or lost SEO.
Which platforms do you migrate from?
Magento and Adobe Commerce, Salesforce Commerce Cloud (SFCC/Demandware), Oracle ATG, Adobe Experience Manager, BigCommerce, WooCommerce, custom and legacy platforms, homegrown headless stacks, and Shopify-to-Shopify Plus upgrades.
Will my store go down during migration?
We plan to minimize disruption, but the cutover window depends on your source platform, data changes, integrations, and DNS setup. We agree on any required freeze or maintenance window, rehearse the sequence, and define go/no-go and recovery criteria before launch.
Will I lose my SEO rankings?
No agency can guarantee unchanged rankings after a migration. We map valuable URLs, validate redirects and canonical signals, preserve relevant content, update internal links and sitemaps, and monitor Search Console after launch to identify and address issues.
How long does a Shopify migration take?
From a few weeks for a focused move to several months for a large enterprise catalog with deep integrations. We scope to the actual complexity.
Can you migrate a very large catalog?
Yes. We’ve migrated some of the largest catalogs in retail, including millions of SKUs, onto Shopify.
Do you migrate both storefront and back office systems?
Yes. We migrate the storefront and re-integrate the operational layer behind it, including ERP, OMS, PIM, CRM, tax, payments, analytics, consent, subscriptions, loyalty, reviews, and fulfillment.
Do you have an enterprise Shopify replatforming guide?
Yes. Our enterprise Shopify replatforming guide covers planning, data, SEO, architecture, integrations, testing, and cutover controls.
What should a Shopify migration agency be responsible for?
A Shopify migration agency should own discovery, architecture, data transformation, storefront delivery, integrations, redirects, analytics, QA, launch rehearsal, cutover, and stabilization as one connected program, with clear owners and recovery paths for every launch-critical dependency.