A sourcing strategy is the way a business chooses suppliers and structures how it buys a particular good or service. For an ecommerce store, the choice can affect supply continuity, delivery timing, operating control and the full cost of keeping a product available.
The useful question is not which sourcing model is universally best. It is which combination fits the category: how many suppliers to use, where they are, whether an outside provider or the business handles an activity, and how closely the business should work with its suppliers.
Sourcing strategy is a set of choices, not one fixed list
Businesses classify sourcing strategies along different dimensions. Supplier count, supplier location, ownership and the supplier relationship describe different parts of a decision, so a business can combine them. For example, using several suppliers in nearby markets is a possible combination, not a separate universal model.
Brent Bolton’s supply-chain lecture presents one framework with six approaches: many suppliers, few suppliers, strategic alliances, vertical integration, joint ventures, and keiretsu networks or virtual companies. That is one framework’s classification, while other common labels describe geography or supplier count. The labels are most useful when they clarify a specific choice.
Sourcing is the work of identifying, evaluating and selecting suppliers. Procurement covers the broader acquisition process, including purchasing, inspection, payment and supplier management. For the related distinction in an ecommerce operation, see how sourcing differs from procurement.
Compare the choices by the decision they change
| Decision | Common approaches | Practical trade-off |
| Supplier count | One supplier, two suppliers, or multiple suppliers | Concentrating purchases can support a closer relationship and simpler coordination, but increases dependence. More suppliers create alternatives and can spread supply risk, while requiring more coordination. |
| Supplier location | Local, nearshore, or global sourcing | Nearby suppliers may offer shorter lead times and easier communication. Global sourcing can provide access to international capabilities or cost opportunities. Actual delivery times and costs depend on the supplier and the purchase. |
| Who owns or performs the activity | Outsourcing or vertical integration | An external provider performs an outsourced activity. Vertical integration means the business owns supply-chain stages, which can increase control but requires investment and reduces flexibility to switch suppliers. |
| Supplier relationship | Transactional, preferred, or performance-based and collaborative | A transactional approach can fit standardized purchases with alternatives. Closer collaboration can suit categories where supplier performance and ongoing improvement matter. The relationship should fit the category. |
One supplier or several?
Single sourcing means choosing one supplier for an item or category. Dual sourcing allocates work to two suppliers; multi-sourcing uses more than one. A second or additional supplier can provide an alternative if one source cannot meet demand, but the business must manage more supplier relationships. A single supplier can make coordination more straightforward, while leaving the business more dependent on that source.
There is no universally right supplier count in the reported frameworks. The decision depends on the category and supplier market: how many acceptable alternatives exist, how difficult supply would be to replace, and how much coordination the business can manage.
Local, nearshore, or global suppliers?
These terms describe supplier location, not supplier count. A store could use one nearby supplier or several global suppliers. Local sourcing is associated with shorter delivery and easier communication; nearshore sourcing can offer shorter lead times than distant sourcing. Global sourcing may open access to capabilities or cost opportunities beyond local markets.
Those are potential advantages, not guaranteed savings. Compare the product price with the broader cost of acquiring and operating the supply, including delivery, maintenance and operating costs where they apply. A lower unit price alone does not capture those costs.
Outsourcing or bringing supply-chain stages in-house?
Outsourcing means an external provider performs an activity. Vertical integration means the business takes ownership of stages in its supply chain. Backward integration moves ownership toward inputs or suppliers; forward integration extends it toward finished products or distribution; balanced integration combines both directions.
CIPS describes greater control over quality and operations as potential benefits of integration. It also notes that integration requires significant investment, reduces flexibility to switch suppliers and can expose the business more when customer demand falls. For a store considering in-house production or distribution, those commitments matter alongside the control it may gain.
How close should the supplier relationship be?
Supplier relationships can range from basic or approved providers to preferred providers and performance-based or value-added partnerships. A transactional relationship may suit a standardized product with many alternatives. A closer partnership may make more sense when the category is important to the business and supplier performance or improvement is a priority.
The relationship model should follow the category’s needs. A close partnership does not remove supply risk, and a competitive buying process is not automatically suitable for every purchase.
Match the approach to category risk and cost impact
The Kraljic Matrix helps a business classify a purchase by supply risk and cost impact. CIPS describes four categories, each with a different sourcing response:
| Category | Supply risk | Cost impact | Sourcing response |
| Critical | High | High | Build a performance-based partnership and manage the relationship closely. |
| Leverage | Low | High | Use competitive bidding, target pricing or product substitution. |
| Bottleneck | High | Low | Prioritize securing supply and finding alternatives. |
| Routine | Low | Low | Standardize purchases and use efficient purchasing systems. |
For an ecommerce operator, the matrix turns broad model names into a category decision. Consider a hypothetical store that sells a high-impact product with few acceptable suppliers. If the operator establishes that supply risk is high, the category fits the matrix’s critical quadrant, which points toward a performance-based partnership. If instead the item has low cost impact but few alternatives and high supply risk, it fits the bottleneck category, where securing supply and identifying alternatives are priorities.
A low-risk purchase with many substitutes could be leverage if its cost impact is high, or routine if its cost impact is low. The operator needs to assess the actual cost impact and availability of alternatives before assigning a category. The example applies the matrix; it is not a reported merchant case.
Strategic sourcing is the process around the choice
A sourcing strategy describes the approach. Strategic sourcing is the broader, iterative process of analyzing a category and its supplier market, selecting an approach and suppliers, negotiating terms, putting the arrangement in place and reviewing performance.
One seven-step framework runs from identifying sourcing opportunities and analyzing the supplier market to developing a strategy, evaluating suppliers, negotiating and contracting, managing suppliers, and continuous improvement. Other frameworks divide the work differently. The steps describe how a business makes and reviews a sourcing decision, not additional sourcing strategy types.
Supplier selection extends beyond unit price
Cost, quality, reliability, service, delivery, financial stability, capacity, risk, diversity and sustainability can all inform supplier selection. Which factors matter most depends on the category and the business’s objectives. For a store operator, the practical comparison is the supplier’s overall operational fit and relevant costs, not the quoted unit price in isolation.
