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Value Chain

A value chain is the full set of activities a company performs to design, produce, deliver, and support a product, where each step adds value that customers are willing to pay for.

What Is a Value Chain?

A value chain is the full sequence of activities a company performs to bring a product or service to customers, from design and sourcing through production, sales, and after-sales support. Each step is meant to add value, meaning something customers will pay more for than the step costs. The concept was popularized by Michael Porter, a Harvard Business School professor, in his 1985 book Competitive Advantage.

How It Works

Porter divided a company's activities into two groups. Primary activities directly create and deliver the product. They include inbound logistics (receiving and storing materials), operations (turning inputs into finished goods), outbound logistics (distributing the product), marketing and sales, and service. Support activities make the primary ones possible. They include firm infrastructure, human resources, technology development, and procurement, which is the buying of inputs.

For example, a clothing company might design its garments in-house, buy fabric from outside suppliers, manufacture through contractors, and sell through its own website. Each step has a cost, and the gap between the price customers pay and the total cost of all steps is the profit the company keeps.

Why It Matters to Investors

Mapping a value chain helps explain where a business earns its gross margin and where it is exposed. A company that controls a key step, such as design or distribution, may hold a competitive advantage that rivals find hard to copy. A company that relies heavily on one supplier or shipping route faces supply chain risk that may not appear in headline revenue.

Some firms pursue vertical integration, owning steps before or after their core business to control costs and quality. Others use outsourcing to focus on a few activities. Each choice trades control against flexibility and capital needs.

Limits of the Framework

The model is a simplification. Real businesses blur the categories, and a value chain map does not measure profitability on its own. Investors still need to check operating margin and cash flow. Value chains also shift as technology and trade conditions change, so an older analysis may no longer reflect how a company operates.

Updated October 23, 2026. For general education only; not financial, tax or legal advice.

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Related Terms

Gross Margin

Gross margin is the percentage of a company's revenue that remains after subtracting the direct costs of producing the goods or services it sells, showing how much each sales dollar contributes.

Competitive Advantage

A competitive advantage is a feature that lets a company outperform its rivals, usually by earning higher profits or keeping them over a long period of time.

Supply Chain

A supply chain is the network of companies, people, activities, information and resources involved in producing a product or service and delivering it to the end customer.

Vertical Integration

Vertical integration is a business strategy in which one company owns or controls several stages of a production chain, from raw materials through to final sale to customers.

Outsourcing

Outsourcing is when a company pays an outside firm or individual to perform a business function or service that it could otherwise do in-house, such as payroll, customer support, or manufacturing.

Operating Margin

Operating margin is the percentage of a company's revenue left after paying for its operating costs, such as wages, materials and depreciation, but before interest and taxes.

Economies of Scale

Economies of scale are cost advantages a business gains as it grows, because the average cost of producing each unit tends to fall when output increases.

Business Model

A business model is the way a company creates, delivers, and captures value, describing who its customers are, what it sells, and how it earns revenue and covers costs.