Supply management is a strategic lever for guaranteeing on-time deliveries, without stock-outs or additional logistics costs. For e-tailers and logistics managers, a well-structured supply plan enables them to anticipate needs, secure supplier lead times, and optimize stock rotation.
In this article, discover the key methods, tools adapted to omnichannel, KPIs to monitor and best practices for boosting your supply chain’s performance.
- Definition of supply management
- 12 steps to a high-performance supply process
- Supply methods you need to know
- Essential calculations
- KPIs and management
- IT tools and architecture for e-commerce
- E-commerce case studies
- Checklists & common mistakes
The French e-commerce market continues to grow at a steady pace. In 2024, it reached 175.3 billion euros, up +9.6% on 2023(Republik Retail). This dynamic trend reinforces the need for e-tailers and logistics managers to professionalize their supply management, in order to deliver ever more orders without stock-outs or overstocking.
From anticipation to supplier collaboration, real-time control and digital tools, this article deciphers the pillars of effective supply management.
Definition of supply management
Supply management encompasses all actions required to ensure the availability of products, at the right time, in the right quantity, in the right place and at the best cost. It includes planning, ordering, receiving, stock management and storage of goods.
Procurement vs. purchasing vs. sourcing
These three concepts are related, but distinct. Sourcing refers to the search for and selection of suppliers, in conjunction with strategic sourcing. Purchasing involves negotiation and contractualization.Procurement focuses on order fulfillment, inbound logistics and lead time management.
P2P, S2P: key differences
Procure-to-Pay (P2P) covers the operational purchasing cycle, from requisition to invoicing. Source-to-Pay (S2P ) adds the upstream phases, notably supplier selection. Good supply management relies on a digitalized P2P process integrated with ERP.
12 steps to a high-performance supply process
Here are the 12 key steps to an effective procurement cycle:
- Needs detection: assessment of net requirements by item, channel or warehouse.
- Calculation of safety stock: to compensate for uncertainties in lead times and volumes.
- Definition of reorder point: threshold triggering replenishment.
- Choice of supply method: JIT, calendar, MRP, Kanban, etc.
- Order placement: taking into account MOQs, prices, purchasing conditions.
- Supplier lead time monitoring: control of lead times and anticipation of deviations.
- Receiving and quality control: checking quantities and conformity.
- Stock updates: via WMS or ERP, synchronized with channels.
- Inventory rotation management: flow analysis, off-take, obsolescence.
- Deviation management: handling backorders, delays, disputes or shortages.
- Review of KPIs and supply plan: ongoing analysis via the supply dashboard.
From identifying needs to reviewing KPIs
It all starts with an analysis of the demand forecast, taking into account historical data and seasonality. On this basis, we calculate the safety stock and determine the reorder point.
The order is then placed according to supplier conditions: MOQ, price, lead time. Once the goods have been received, stocks are updated and monitored through stock rotation.
Anomalies such as backorders, delays or disputes need to be dealt with quickly. Collaboration with suppliers (via VMI, EDI) enables flows to be anticipated and made more reliable. Finally, procurement KPIs are analyzed in an appropriate dashboard to adjust the plan.
Supply methods you need to know
Each supply method meets specific logistical objectives: some favor fine-tuned demand management to adapt to sales in real time, others aim tooptimize flows to limit dormant stocks and accelerate rotation, while still others enable controlled management of the logistical workload by smoothing supplies over time.
The choice of method depends on product type, seasonality, distribution channel and the maturity of existing tools.
JIT / pull flows
Just-in-time (JIT ) is based on pull flow. We supply only what is needed, at the exact time. This method reduces inventory, but requires excellent lead-time management and flawless supplier reliability.
Calendar method
Here, orders are released on fixed dates, irrespective of stock levels. This method is well suited to products with controlled seasonality, or to supplies under recurring contracts.
Kanban
The Kanban method is based on a system of visual thresholds. As soon as a defined level is reached, an order is automatically triggered. Ideal for items consumed on a regular basis.
Forecasting / MRP
MRP (Material Requirements Planning) is based on demand forecasts crossed with stock levels and lead times. In distribution, the DRP (Distribution Requirements Planning) variant is used. These methods offer anticipatory and reliable management.
ABC method: prioritize by value
Our method ABC is a technique for classifying items based on their economic weight. Products are classified into three categories:
- A: strategic items with high value or high turnover (around 20% of references for 80% of value),
- B: intermediate items (30% of references, 15% of value),
- C: low-critical or slow-moving items (50% of references, 5% of value).
This method makes it possible to adjust safety stock levels, replenishment frequency and follow-up efforts according to product importance. It is often used in conjunction with MRP or turnover management to optimize logistics resources.
Essential calculations
To guarantee smooth supply management, certain key indicators need to be calculated and updated on a regular basis. Not only do they enable you to anticipate stock shortages, they also enable you to adjust order volumes, control lead times andoptimize overall supply chaincosts.
By integrating this data into operational management systems, we can leverage it to boost performance and build resilience in the face of market hazards.
Order point, safety stock, EOQ
Safety stock protects against unforeseen events. The reorder point triggers the order, taking lead time into account. TheEOQ (economic quantity) calculates the optimum volume to balance ordering and storage costs.
For example, for a product consumed at 200 units per month, with a lead time of 15 days, a MOQ of 100 and an order cost of €30,EOQ reduces the TCO (total cost of ownership ) of supply.
KPIs and management
Efficient supply management relies on reliable, accessible and actionable indicators. They must reflect operational reality in real time, be shared between the teams concerned (logistics, purchasing, finance) and enable rapid decision-making.
Without this quantified visibility, it becomes difficult to anticipate drifts, adjust stock levels or measure supplier performance. These indicators are the backbone of rigorous, results-oriented management…
Service rate, turnover, supplier reliability
The service rate measures the ability to deliver on time and in full. Inventory turnover indicates the frequency with which stocks are renewed. Supplier reliability measures compliance with lead times and quantities.
These KPIs are monitored via an appropriate dashboard, cross-referenced with stock coverage to identify areas at risk.
IT tools and architecture for e-commerce
In an increasingly demanding omnichannel environment, logistics flows are multiplying and becoming more complex. To remain successful, e-retailers need to rely on the right logistics solution solution, made up of interconnected tools capable of processing information from multiple channels in real time.
Centralization, responsiveness and automation become decisive assets for delivering faster, without errors, and at lower cost.
WHO’s role: orchestrating omnichannel centralization
TheOrder Management System (OMS) plays a pivotal role in omnichannel order management.
It aggregates all sales from different channels (e-commerce site, marketplaces, physical stores, etc.) in a single interface, while ensuring real-time stock synchronization.
It also automates theintelligent routing of orders to the most appropriate warehouses or pick-up points, according to product availability, stock location or chosen delivery method.
OMS thus helps to keep a clear, reliable delivery promise, essential to customer satisfaction, especially in complex models like dropshipping, which require perfect synchronization between order, stock and third-party carrier.
The role of the WMS: industrializing order picking
The Warehouse Management System (WMS) optimizes warehouse operations.
It controls storage locations, picking modes and preparation waves, and manages internal movements seamlessly.
Thanks to it, logistics teams gain in productivity, limit preparation errors, and ensure better product traceability.
During busy periods, such as sales or holiday periods, the WMS enables us to maintain constant service quality, even with high volumes.
TMS role: guarantee fast, traceable shipping
The Transport Management System (TMS) is used to secure the shipping process.
It automatically selects the most suitable carrier according to defined criteria (price, lead time, destination, type of parcel, etc.), generates shipping shipping labelsand tracks parcels in real time, right through to delivery.
This level of automation is essential to meet today’sD+1 or same-day dispatch standards, while keeping transport costs under control.
The TMS also facilitates returns management, which is often complex, but essential for efficiently completing the logistics cycle.
Marketplace & carrier integration
Marketplace and carrier integration, via API or EDI, plays an essential role in controlling omnichannel flows.
They enable all orders to be centralized in a single system, whatever the channel of origin, and provide real-time stock updates.
This automation drastically reduces processing errors, minimizes shipping delays and helps avoid stock-outs, which are often critical to customer experience and sales performance.
E-commerce case studies
In an e-commerce context where the customer promise is based on speed, precision and product availability, supply management takes on an even more critical dimension. Cycles are shorter, volumes more volatile, and the demands of marketplaces more stringent.
Operational success depends on perfect coordination between forecasts, digital tools and logistical responsiveness. Here are three concrete examples of the impact of controlled supply management in an omnichannel environment.
The pressure is all the greater as the customer base to satisfy continues to grow: in 2023, 39.4 million French people will have made at least one online purchase(Fevad). Every delay, backorder or unfulfilled delivery promise has a direct impact on the satisfaction and loyalty of millions of consumers.
Peak management (sales, holidays) and inventory allocation
Busy periods such as sales, end-of-year celebrations, private sales or promotional campaigns call for flawless organization.
Replenishment needs to be anticipated well in advance, taking into account seasonality, lead times and supplier MOQs. The challenge is to have the right stock, in the right place, at the right time.
The management of stock allocations then becomes strategic: should warehouses close to delivery areas, the most profitable channels, be favored, or distributed equitably between all? An intelligently-configured OMS, coupled with customized routing rules, makes it possible to gain agility and maximize service levels, even under pressure.
Marketplaces: stock synchronization and delivery promises
On marketplaces, speed and reliability are key to the Buy Box. Broken promises generate backorders. OMS synchronizes orders and inventory to guarantee delivery: an omnichannel challenge underlined byEY‘s experts.
OMS enables real-time synchronization of available stocks on each marketplace, automating preparation rules and ensuring consistency between actual and displayed stocks. The result: fewer disputes, more sales, greater customer loyalty and increased profitability on these demanding channels.
Returns & replenishment (RTO): closing the loop
Often perceived as a cost, returns can become a strategic resource if properly managed. With a view to the circular economy and operational performance, they are a lever for rapid, low-cost restocking.
The WMS handles the reception of returns, the sorting of products (repackable or not) and their rapid reintegration into stock. For its part, the TMS automates the creation of return labels, notifies the customer and ensures transparent tracking of the parcel until it is re-injected.
The result: the logistics cycle is completed efficiently, products become available again more quickly, and the overall cost of processing returns is reduced.
Checklists & common mistakes
- Do not define safety stocks for strategic products
- Working withoutthreshold alert systems
- Forget seasonality in forecasting
- Ignore suppliers’ MOQ constraints
- Underestimating logistics TCO (total cost of ownership)
- NoEDI or VMI to streamline exchanges
Increase your efficiency with Shippingbo
Supply management is no longer limited to placing orders and filling warehouse shelves. Today, it is a strategic lever for competitiveness in e-commerce, where responsiveness, reliability and optimization of resources make all the difference. Each link in the chain contributes to customer satisfaction and overall profitability: anticipating needs, choosing the right supply method, managing inventory in real time, securing shipment lead-times. But to achieve this, you need the right tools.
With Shippingbo, you gain access to a technology suite designed to automate and centralize your logistics operations, from order receipt to transport label. You’ll be able to control your flows with precision, reduce your costs, and enter fully into logistics 4.0, by automating every link in your supply chain.
👉 Find out how to best manage your inventory :
FAQ – Everything you need to know to optimize your supply management
Start by structuring your supply plan by identifying critical products, their sales volumes, and associated constraints (MOQ, lead time, seasonality…). Next, define a safety stock level for sensitive items, set up a clear replenishment system (Kanban, calendar or forecast method, depending on the context) and choose the right tools to automate stock updates.
Don’t forget to formalize your processes in an SOP (Standard Operating Procedure) document, shared between the logistics, purchasing and finance teams. Efficient management always starts with visibility and rigor.
The essential supply KPIs are :
- Service rate: percentage of orders delivered on time and in full.
- Stock rotation: frequency with which stock is renewed over a given period.
- Supplier reliability: ability to meet deadlines and deliver expected quantities.
- TCO (Total Cost of Ownership): the full cost of a product (purchase, storage, delivery, etc.).
The key tool isOMS (Order Management System). It centralizes all orders, whatever their channel of origin (website, marketplace, store, B2B…), and synchronizes inventories in real time. OMS also manages routing rules, preparation lead times and delivery promises. Integrated with a WMS and a TMS, it forms the foundation of a high-performance omnichannel logistics architecture.
Native integrations (with marketplaces, carriers, ERP, CMS, etc.) guarantee maximum fluidity of information flows, without the need for third-party connectors or custom development.
They reduce synchronization errors, automate stock updates and transport returns, and speed up the production launch of new channels. They are an immediate lever for e-commerce performance, scalability and upgradability, essential for absorbing growth peaks without loss of efficiency.
Glossary – Supply management terms you need to know
OMS (Order Management System)
Omnichannel order management system. It centralizes orders, synchronizes inventory in real time, and manages intelligent routing to warehouses or points of sale.
WMS (Warehouse Management System)
Warehouse management tool. It organizes locations, picking processes and internal flows to optimize productivity and reduce logistical errors.
TMS (Transport Management System)
Dedicated shipment management system. It automatically selects carriers, generates labels, tracks deliveries and facilitates returns.
MOQ (Minimum Order Quantity)
Minimum quantity imposed by a supplier to validate an order. It has a direct influence on stock levels and purchasing budgets.
EOQ (Economic Order Quantity)
Economic order quantity, calculated to minimize total procurement costs (storage + order).
Lead time
The time between placing an order and actually receiving the goods. An essential indicator in supply planning.
P2P (Procure-to-Pay)
Complete operational purchasing process, from requisition to invoice.
S2P (Source-to-Pay)
Extended process including upstream strategic sourcing (supplier selection) before the P2P cycle.
TCO (Total Cost of Ownership)
Total cost of a product or process, including purchase, storage, transport, handling, etc.
VMI (Vendor Managed Inventory)
A method whereby suppliers manage their customers’ stock themselves, based on shared data. Favors fluidity of replenishments.
EDI (Electronic Data Interchange)
System for automatic transmission of information (orders, invoices, delivery notes) between customer and supplier systems.
DRP (Distribution Requirements Planning)
Method for planning distribution requirements, based on available stocks, sales forecasts and logistics lead times.
Buy Box
On a marketplace (e.g. Amazon), this is the purchase insert first visible to the customer. It is awarded to the seller offering the best conditions (price, lead time, reliability).
Backorder
Customer order pending because item is temporarily out of stock. Must be processed quickly to avoid dissatisfaction.
Just-in-time (JIT)
A supply method in which products arrive at the exact moment they are needed, with no buffer stock.
Kanban
Visual flow management method. A new order is triggered as soon as a predefined threshold is reached.
MRP (Material Requirements Planning)
Planning system based on forecast demand, existing stocks and supplier lead times.