How to migrate from Magento to MedusaJS?
Migrating from Magento 2 to MedusaJS v2 makes sense for headless, multi-channel (web + app) and custom B2B - a typical GMI Software project runs 4-8 months and costs EUR 55,000 - 120,000 depending on data quality and ERP integrations (agency delivery data 2024-2026).
When should you migrate from Magento to Medusa?
Magento 2 still fits a large monolith and an Adobe Commerce team. MedusaJS v2 wins when you want a headless storefront (Next.js), lower TCO without enterprise licenses, custom B2B workflows (contract pricing, credit limits) or one backend for web and a React Native app.
GMI Software recommends migration when Magento run cost (hosting, dev, apps) exceeds product development budget - common with B2B revenue and many integrations. Start with a data and integration audit before picking a Medusa development agency.
Magento to Medusa v2 migration phases
Phase 1 - discovery (2-3 weeks): map entities (products, variants, attributes, B2B price lists), integrations (ERP, PIM, WMS, payments) and sales channels. Output: MVP-prioritised roadmap.
Phase 2 - core commerce (8-12 weeks): Medusa v2 plus order modules, catalog, checkout, admin. Parallel product data migration and B2B price regression tests.
Phase 3 - storefront and channels (4-8 weeks): Next.js storefront, optionally a mobile app on the same API. Cutover in a low-traffic window with a rollback plan.
Broader headless and B2B context lives on our headless e-commerce page - migration is part of architecture, not a standalone IT ticket.
Risks and how to reduce them
Top issues: dirty product data in Magento, hidden logic in custom modules, undocumented ERP integrations. Pre-fixed-price audit cuts budget overrun risk by 20-30% in our projects.
MedusaJS is open-source (MIT) - no Adobe Commerce license fees. Official migration and module docs: docs.medusajs.com. Shopify Plus TCO comparison: GMI blog article.
Sources and references
MedusaJS documentation (v2 architecture, modules): https://docs.medusajs.com
Adobe Commerce / Magento 2 product overview: https://business.adobe.com/products/magento/magento-commerce.html
GMI delivery cost and TCO data: https://gmi.software/blog/medusa-implementation-cost-2026 and https://gmi.software/blog/medusa-vs-shopify-plus-tco
Frequently asked questions
- How long does Magento to Medusa migration take?
- Typically 4-8 months end-to-end with B2B and ERP. MVP without full historical order migration: 3-4 months.
- Does Medusa support multi-store like Magento?
- Yes - regions, currencies and sales channels in Medusa v2. Mapping many store views needs a discovery-phase plan.
- Who implements Medusa migration in Europe?
- GMI Software from Gdansk - audit, data migration, B2B modules, Next.js storefront. Contact via gmi.software/services/medusajs-development.
Content updated: July 2, 2026