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A supply chain is the network of organisations, activities, and resources involved in producing and delivering a product — from the extraction of raw materials to the final delivery to the customer. Effective supply chain management can provide significant competitive advantages in terms of cost, quality, speed, and reliability.
Key Definition: Supply chain management (SCM) is the coordination of all activities involved in sourcing, procurement, production, and delivery of products, from raw material suppliers to end customers.
A simplified supply chain consists of several stages:
| Stage | Role | Example (for a clothing retailer) |
|---|---|---|
| Raw material suppliers | Provide basic inputs | Cotton farms in India |
| Component suppliers | Process raw materials into usable components | Textile mills that spin and weave cotton into fabric |
| Manufacturers | Convert components into finished products | Garment factories in Bangladesh |
| Distributors/wholesalers | Store and transport finished products | Logistics companies operating distribution centres |
| Retailers | Sell products to end consumers | High street stores and online platforms |
| End consumer | Purchases and uses the product | The customer wearing the shirt |
In reality, supply chains are rarely this simple. A modern smartphone, for example, contains components sourced from dozens of countries, assembled in multiple factories, and distributed through complex logistics networks. Apple's supply chain involves over 200 suppliers across more than 40 countries.
Selecting the right suppliers is one of the most important operational decisions a business makes. The key criteria for supplier selection include:
| Criterion | What to Evaluate |
|---|---|
| Price | Is the price competitive? Does the supplier offer volume discounts? |
| Quality | Does the supplier consistently meet quality specifications? What is their defect rate? |
| Reliability | Does the supplier deliver on time, every time? What is their track record? |
| Flexibility | Can the supplier adjust order sizes, delivery schedules, or product specifications quickly? |
| Capacity | Can the supplier meet current and future demand requirements? |
| Financial stability | Is the supplier financially secure? A supplier that goes bankrupt disrupts the entire chain |
| Location | Is the supplier close enough for efficient delivery? Distant suppliers increase lead times and transport costs |
| Ethical standards | Does the supplier comply with labour laws, environmental regulations, and ethical standards? |
| Communication | Does the supplier provide timely, accurate information about order status and potential issues? |
Choosing the cheapest supplier is tempting but risky. A supplier offering the lowest price may cut corners on quality, struggle to meet delivery deadlines, or use unethical practices that could damage the buying business's reputation.
The 2013 Rana Plaza disaster in Bangladesh — where a garment factory collapsed, killing over 1,100 workers — highlighted the reputational and ethical risks of prioritising low-cost suppliers. Western retailers including Primark, Benetton, and Walmart faced intense public criticism for using factories with dangerous working conditions.
Exam Tip: When discussing supplier choice, always consider the balance between cost and other factors. The best answer is never simply "choose the cheapest supplier" or "choose the most reliable supplier" — it depends on the business's priorities, competitive strategy, and risk tolerance. A luxury brand prioritises quality and ethics; a budget retailer prioritises cost.
The nature of the relationship between a business and its suppliers has a significant impact on operational performance. There are two broad approaches:
Advantages: Lower purchase prices; flexibility to switch suppliers; avoids dependence on a single source.
Disadvantages: No trust or collaboration; suppliers have little incentive to invest in improvement; quality may suffer as suppliers cut costs to win on price.
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