3.1 Global Supply Chain Network Design
Key Takeaways
- Network design sets long-term cost and service capability by fixing facility locations, capacity, and material flow paths before operational planning begins.
- The configuration trade-off is centralization (lower inventory and overhead, longer lead times) versus decentralization (faster local response, higher fixed cost and duplication).
- INCOTERMS 2020 are an ICC rule set of 11 trade terms that assign cost, risk-transfer point, and delivery obligations between buyer and seller, not payment terms.
- Total landed cost includes unit price plus freight, insurance, duties, tariffs, customs brokerage, and inventory carrying cost over longer global lead times.
- Reshoring or nearshoring is favored when landed cost, lead-time variability, IP risk, or tariff exposure outweigh the unit-price advantage of distant offshoring.
Why Network Design Matters for the CSCP Exam
The Global Supply Chain Networks module is roughly 10% of the CSCP exam. It tests whether you can reason about structural decisions: where to put plants, distribution centers (DCs), and suppliers, and how product should flow between them. These decisions are expensive to reverse, so the exam frames them as strategic trade-offs rather than day-to-day execution.
A supply chain network is the configuration of facilities (suppliers, plants, DCs, customers) and the transportation links among them. Network design answers four linked questions: how many facilities, where, how much capacity at each, and which markets each serves.
The Core Configuration Trade-off
Every network choice trades responsiveness against efficiency. Centralizing inventory in fewer, larger facilities lowers total safety stock (via risk pooling — aggregating demand variability reduces required buffer) and overhead, but lengthens outbound lead time to customers. Decentralizing into many local facilities shortens delivery time but duplicates inventory and fixed cost.
| Configuration | Strength | Weakness |
|---|---|---|
| Centralized | Lower total inventory (risk pooling), economies of scale | Longer customer lead time, higher outbound freight |
| Decentralized | Fast local delivery, market responsiveness | Inventory duplication, higher fixed and overhead cost |
| Hybrid / postponement | Common stock held centrally, customized late and locally | Requires modular product and process design |
Postponement (delayed differentiation) keeps a product generic as long as possible and customizes it near the customer, capturing pooling benefits while still serving local needs.
Facility Location and Capacity
Facility-location analysis weighs market proximity, labor and land cost, supplier access, transportation infrastructure, tax and incentive regimes, and political stability. A common technique is the center-of-gravity (centroid) method, which finds a location that minimizes weighted transportation distance-cost to demand and supply points. It is a starting point, not a final answer — qualitative factors and discrete site availability override the raw centroid.
Capacity decisions define how much each node can produce or move. A capacity cushion is intentional excess capacity held to absorb demand surges or disruption. A lead capacity strategy adds capacity ahead of demand (protects service, risks idle assets); a lag strategy adds it after demand is proven (protects cost, risks stockouts and lost sales).
Mapping the Network
The diagram below shows a typical three-echelon global flow.
Global Considerations
Going global adds cost and risk layers that a domestic network does not face. The CSCP exam expects you to recognize each one.
Currency Exposure
When sourcing or selling across currencies, exchange-rate movement changes landed cost and margin. Transaction exposure is risk on a specific committed payable or receivable; economic exposure is the longer-run competitiveness effect of sustained rate shifts. Firms manage exposure with natural hedging (matching cost and revenue currencies), forward contracts, and sourcing diversification.
Lead Time and Variability
Long-distance sourcing increases both average lead time and lead-time variability. Variability — not just length — drives safety stock, because reorder-point and safety-stock formulas scale with the standard deviation of demand during lead time. A 6-week ocean lane that varies +/- 2 weeks can require more buffer than a stable 8-week lane.
INCOTERMS 2020
INCOTERMS (International Commercial Terms) are an International Chamber of Commerce (ICC) rule set of 11 standardized three-letter terms. They define who arranges and pays for carriage and insurance, and where risk transfers from seller to buyer. They do not set price, payment timing, or title transfer.
| Term | Risk transfers to buyer at | Notes |
|---|---|---|
| EXW (Ex Works) | Seller's premises | Maximum buyer obligation |
| FOB (Free On Board) | Goods on board the vessel | Sea/inland waterway only |
| CIF (Cost, Insurance, Freight) | On board vessel (seller pays freight + min. insurance to destination) | Sea/inland waterway only |
| DAP (Delivered At Place) | Named destination, ready for unloading | Any mode |
| DDP (Delivered Duty Paid) | Named destination, cleared and duties paid | Maximum seller obligation |
A frequent exam trap: under CIF the seller pays freight and insurance to the destination port, but risk still transfers when goods are loaded on the vessel at origin.
Trade Compliance, Duties, and Tariffs
Cross-border movement triggers customs entry, Harmonized System (HS) classification, duty and tariff assessment, country-of-origin and rules-of-origin documentation, and screening against denied-party and export-control regimes. Free trade agreements (FTAs) can reduce or eliminate duties when origin rules are met. Non-compliance risk (seizures, fines, shipment holds) is itself a network cost and a sourcing-location factor.
Total Landed Cost and the Offshoring Decision
Total landed cost is the true delivered cost of a sourced item: unit price + inbound freight + insurance + duties and tariffs + customs brokerage + handling + the inventory carrying cost of longer pipeline and safety stock + quality/compliance risk cost. A low ex-works unit price can still produce a high landed cost.
- Offshoring moves production or sourcing to a distant low-cost country. It can cut unit cost but raises lead time, variability, freight, and IP/quality/geopolitical risk.
- Nearshoring relocates to a country geographically close to demand, trading some unit-cost savings for shorter, more reliable lead times.
- Reshoring returns activity to the home country, favored when total landed cost, responsiveness needs, tariff exposure, or supply-chain resilience outweigh offshore unit-cost gains.
The exam answer is almost always evaluate total landed cost and risk-adjusted cost, not unit price alone.
Under INCOTERMS 2020 CIF (Cost, Insurance, Freight), at what point does risk of loss transfer from seller to buyer?
A company centralizes inventory from five regional warehouses into one national distribution center. Which effect is the primary expected benefit?
Which scenario most strongly justifies reshoring production from a distant low-cost country?