Value Chain
Value Chain
What is a value chain?
- Breaking company activities down into a chain of value
- Two layers: primary activities and support activities
- Revisited as a tool for prioritizing DX and AI
When a value chain is applied properly, the language used in meetings changes first. Instead of “logistics costs are too high,” people say “outbound logistics is 5.8% of revenue, while our competitors are at 3.9%,” and the problem shifts from a department to an activity. Looked at by department, the logistics team gets grilled; looked at by activity, the cause turns out to be the production lot policy. In other words, the framework’s real value lies not in drawing the picture but in reattaching cost and customer value to activities, so that accountability and improvement points are reassigned.
The line between the value chain and its commonly confused neighbors is clear. SCM is operational optimization that makes the flow of materials and information faster and cheaper, while the value chain is a strategic analysis that identifies which activities create margin. If a process map draws the sequence of work, a value chain is complete only when each activity is tagged with cost and differentiation contribution in numbers. That is why more than half of the effort goes into re-sorting accounting items (manufacturing cost, SG&A) into activities, and companies without activity-based costing (ABC) data usually stall at this stage. Also, Porter’s five primary activities assume a manufacturer, so SaaS, distribution, and service businesses need to define their own activities, such as content acquisition, onboarding, and retention.
The most common failure is simply redrawing the org chart. The moment department names go into the activity boxes, the analysis turns into a department scorecard, and activities that span two departments or have been outsourced vanish from the map. The second is local optimization of individual activities. For example, enlarging production lots to cut unit cost can worsen inventory turnover and shipping lead time, so overall margin actually shrinks. Improvements that ignore linkages only push cost onto the neighboring activity. The claim that “we aren’t a manufacturer, so this doesn’t apply to us” comes from the same misunderstanding.
John KimInstructor John Kim, author of “B2B Marketing Design” and CEO of Nanum Consulting
Jinho DanAccounting instructor who makes financial statements, costing, and tax easy to understandIt was introduced by Michael Porter of Harvard Business School in his 1985 book Competitive Advantage. It starts from the idea that sources of competitive advantage should be analyzed at the level of individual activities, not the company as a whole. Together with the Five Forces, it is considered one of the two pillars of Porter’s strategy theory.
Let’s look at a hypothetical case. Company A, an auto parts manufacturer with 320 employees and KRW 180 billion (≈ US$134,670,100) in annual revenue, had seen its operating margin fall for three years in a row to 3.2%. Management ordered “AI adoption to transform every process,” but had no basis for deciding where to start. The strategic planning team launched a six-week value chain analysis.
- The head of strategic planning spent three weeks working side by side with the finance team, re-sorting manufacturing costs and SG&A into 9 activities instead of departments. For the first time, it became clear that outbound logistics took 5.8% of revenue, far above the industry average of 3.9%.
- When the logistics head was called in and pressed on the issue, the production head said, “You told us to cut inventory, so we split the lots into smaller ones, and now we send trucks out four times a day.” That confirmed the cost driver was not logistics but the production lot policy.
- Breaking down the quality activity showed that visual inspection alone took 22 people across three shifts, yet customer claims still ran at 11 a year, so the head of quality assurance put AI visual inspection at the top of the candidate list.
- At the prioritization meeting, the CFO drew a hard line: "We can’t afford to automate every process. Pick two." They allocated KRW 1.2 billion (≈ US$897,800) to two projects: consolidated shipping (lot redesign) and inspection automation.
- Six months later, outbound logistics had dropped from 5.8% to 4.3% of revenue and claims from 11 to 4, and operating margin rose from 3.2% to 4.1%. The analysis format was adopted as the standard template for the following year's business plan.