Last updated: June 2026

Medusa.js Composable Commerce Replatform and Node.js Backend Orchestration for Manutan

Composable commerce architecture, Medusa.js headless implementation, Node.js orchestration layer, and ERP integration for a multi-country European industrial distributor

Adobe Commerce Conversion Optimization and Checkout Redesign

Project Summary

Delivered a composable commerce transformation for Manutan, a multi-country European B2B industrial supplies distributor; migrated a legacy monolithic commerce architecture to a Medusa.js headless commerce engine with a Node.js orchestration layer, reduced order API response latency by 64%, improved catalog load performance by 52%, and enabled real-time pricing and inventory synchronization across ERP and frontend systems.

Manutan’s ERP, catalog, pricing, and frontend logic were tightly coupled in a rigid legacy stack, which made it hard to scale across markets. Elogic Commerce introduced a Medusa.js commerce engine with a Node.js orchestration layer to decouple business logic from the legacy systems and run real-time, API-first commerce operations.

Key Outcomes

64%

reduction in API response times across catalog and ordering endpoints

52%

improvement in product listing and catalog load performance

Real-time pricing and inventory synchronization across ERP and storefront systems

Client

Manutan

Industry

B2B industrial supplies, procurement, and distribution

Region

Europe (multi-country)

Engagement type

Composable commerce replatform, Medusa.js implementation, Node.js orchestration

Platform

Medusa.js headless commerce engine, Node.js backend services

Architecture

API-first composable commerce with ERP integration layer

ERP systems

SAP S/4HANA as system of record for inventory, finance, and contracts

Scope

Catalog, pricing engine, cart, checkout, order orchestration, ERP sync

Timeframe

Multi-phase implementation; ongoing engineering partnership

Primary outcome

Full migration from monolithic commerce to composable architecture

About the Client

Manutan is a European B2B industrial supplies distributor serving enterprises, public sector organizations, and procurement teams across multiple countries. The business runs a complex catalog with localized assortments, contract-based pricing, and recurring procurement workflows. Its legacy commerce system had grown into a tightly coupled architecture where catalog presentation, pricing logic, and order processing were embedded in a single monolithic platform, limiting scalability and slowing regional expansion.

Project Complexity

Legacy monolithic architecture

The platform tightly coupled catalog, pricing, checkout, and ERP logic, so even minor changes required cross-system modifications and lengthy deployment cycles.

Multi-country catalog fragmentation

Each market required different assortments, pricing rules, and availability logic, but the legacy system lacked a clean abstraction layer to manage localization at scale.

ERP-dependent pricing and inventory

Pricing and stock availability were controlled by backend ERP systems, requiring real-time synchronization without degrading storefront performance.

High-volume procurement workflows

Enterprise buyers placed large recurring orders that demanded stable performance under peak load and predictable API response behavior.

No composable foundation

There was no separation between commerce engine, business logic, and frontend, which limited modernization and experimentation.

Migration execution constraints

Moving off the tightly coupled monolith could not disrupt live, high-volume procurement, so the cutover had to be sequenced rather than switched at once. Legacy catalog and pricing data had to be reconciled against the new services, and ERP synchronization had to be proven stable under load before the storefront depended on it.

Rigid monolithic system

Core commerce logic was embedded in a legacy platform, making it hard to scale or add functionality without system-wide regressions.

Slow catalog and pricing performance

Product listings and pricing calculations were slow because of tightly coupled ERP calls and inefficient backend architecture

No modularity for expansion

Entering new markets required duplicating logic instead of reusing shared services.

Inefficient order orchestration

Order processing was bound to frontend interactions, limiting automation and integration.

Limited API readiness

No unified API layer existed for external systems, marketplaces, or new frontend experiences.

Medusa.js commerce engine

Elogic Commerce implemented Medusa.js as the core commerce engine, replacing monolithic functionality with a lightweight, extensible architecture. It handles cart and order management, a product and catalog abstraction layer, a modular pricing and discount engine, and plugin-based commerce logic exposed as services.

Node.js orchestration layer

A dedicated Node.js layer sits between Medusa.js and Manutan’s enterprise systems as the intelligence layer. It handles ERP communication and synchronization, real-time pricing aggregation, inventory normalization across systems, business-rule orchestration for B2B contracts and pricing tiers, and multi-market catalog segmentation.

API-first architecture

The system was redesigned as an API-driven ecosystem: unified commerce APIs for frontend consumption, separate services for catalog, pricing, and orders, standardized data contracts, and event-driven communication between services.

ERP integration abstraction

In place of direct frontend-to-ERP coupling, a middleware abstraction layer handles real-time inventory synchronization, pricing updates pushed through the Node.js layer, asynchronous order synchronization, and reduced dependency load on the ERP.

Headless frontend enablement

The architecture supports a fully decoupled frontend, with React and Next.js storefront readiness, multi-market flexibility, independent deployment cycles, and faster UX iteration without backend dependency.

Event-driven order processing

Order workflows were rebuilt on an event-based model. Order-creation events are processed asynchronously, ERP synchronization is separated from the frontend request flow, and resilience improves under load spikes.

Architecture Overview

The final architecture separates concerns across independently scalable layers:

Medusa.js: commerce engine for catalog, cart, and order APIs

Node.js: orchestration layer for pricing, ERP sync, and business logic

ERP systems: system of record for inventory, finance, and contracts

Event bus: asynchronous order and inventory processing

Headless frontend: presentation layer consuming APIs

This separation enabled composability and independent scaling of each layer.

Performance and scalability

64%

reduction in API response times across catalog and ordering endpoints

52%

improvement in catalog and product listing performance

Stable performance under high-volume procurement periods

Commerce and operational efficiency

Real-time pricing synchronization across ERP and storefront

Faster

order processing through decoupled architecture

Reduced

system coupling across the commerce stack

Transformation and trade-offs

Full migration from monolithic to composable commerce architecture

Enabled

Multi-country scalability without duplicating logic

Established

reusable commerce services for future expansion

Medusa.js composable commerce architecture design

Node.js backend orchestration for enterprise commerce systems

ERP integration abstraction and synchronization layer design

Headless commerce architecture implementation

Event-driven order processing systems

API-first distributed commerce architecture

Multi-country B2B catalog and pricing modeling

Legacy monolith to composable commerce migration

B2B enterprise distributors with legacy monolithic ecommerce systems

companies requiring ERP-driven pricing and inventory synchronization

multi-country commerce operations with localized catalogs

organizations migrating toward composable or headless architecture

businesses requiring API-first commerce infrastructure

When This Solution Is a Good Fit

This approach is ideal for companies that:

Operate legacy ecommerce platforms that limit scalability and innovation

Have ERP systems tightly coupled to frontend performance

Need multi-market expansion without duplicating logic

Manage catalog and pricing complexity a monolith cannot handle

Require API-first architecture for omnichannel growth

This pattern is not the right fit for small-scale ecommerce operations, simple DTC storefronts, or businesses without complex ERP-driven commerce requirements.

Planning a Composable Commerce Replatform or Medusa.js Migration?

If your commerce architecture is constrained by monolithic systems, tightly coupled ERP integrations, or limited scalability across markets, Elogic Commerce can help. Talk to our team about building a composable commerce architecture using Medusa.js, a Node.js orchestration layer, and API-first system design for scalable, high-performance B2B commerce.