Strategic Business Leader · The internal resources, capabilities and competences of an organisation

Core Competences and Competitive Advantage in ACCA SBL

Updated 11 October 2026 · Fact-checked

A core competence is a skill or bundle of skills, built through collective learning, that gives access to many markets, adds real customer value and is hard to copy (Prahalad and Hamel). Kay's distinctive capabilities are similar. In SBL you identify them in the scenario and judge whether they sustain advantage.

Understand Core Competences and Competitive Advantage

Start with a simple idea. Resources are what an organisation has: people, plant, cash, brands, patents. Competences are what it can do well with those resources. Two firms can own the same machines, yet one makes far better products because it knows how to use them. That know-how is where advantage comes from.

Prahalad and Hamel argued that a company is like a tree. The roots are core competences. The trunk and main limbs are core products. The branches are business units, and the leaves and fruit are end products. If you only look at the leaves, you miss what feeds them. Core competences are the collective learning of the organisation, especially how it coordinates skills and joins up technologies.

They gave three tests for a core competence. It should provide potential access to a wide variety of markets. It should make a significant contribution to the perceived customer benefits of the end product. It should be difficult for competitors to imitate. Honda's engine expertise, used in cars, motorbikes and generators, is the classic illustration.

Kay looked at it from a different angle. He said sustainable advantage comes from distinctive capabilities, which are features the firm has that competitors cannot copy easily. Kay named three sources: architecture (the network of relationships inside the firm or with suppliers and customers), reputation (built over time and trusted by customers), and innovation (the ability to create new products or processes, protected for example by patents). A fourth, strategic assets such as a monopoly licence, is sometimes added.

In SBL, the link to advantage is the key mark-earner. A competence or capability only creates sustainable competitive advantage if it is valuable, rare and hard to imitate, and the organisation is organised to exploit it. Use it with resource analysis, VRIO and the value chain.

Key rules to remember

Prahalad and Hamel's three tests of a core competence: Core competence = access to many markets + significant customer benefit + difficult to imitate; All three should be met. Use them as a checklist against the scenario.
Kay's distinctive capabilities: Distinctive capability = architecture, reputation, innovation (plus strategic assets); Each must be hard for rivals to copy to give sustainable advantage.
Resource versus competence: Resources = what you have; competences = what you do well with them; Threshold resources and competences are needed just to compete. Unique ones create advantage.

How to solve Core Competences and Competitive Advantage questions

Use this method for any question asking you to identify, assess or advise on core competences or capabilities.

1Read the requirement and note whether it asks you to identify, evaluate, or recommend.
2Scan the scenario for what the organisation does unusually well: skills, systems, relationships, reputation, innovation.
3Separate resources (assets held) from competences (activities done well). Do not list assets as competences.
4Test each candidate against Prahalad and Hamel's three tests, or against Kay's architecture, reputation and innovation.
5Judge sustainability: can rivals copy, buy or substitute it? Is it rare, and does the structure exploit it?
6Link to advantage and strategy: how does it support a generic strategy, new markets or diversification?
7Give a clear conclusion or recommendation, and note risks such as core rigidity or loss of key staff.
8Use scenario facts throughout so your points are applied, not theory only.

Quickest way: Three tests and three sources

When to use it: When time is short and you need a structured answer in a few minutes.

Underline unusual strengths in the scenario.
Write the labels: markets, customer value, hard to copy.
Tick or cross each strength against them.
Add Kay: architecture, reputation, innovation.
Write one line on sustainability and one recommendation.

Common mistakes in Core Competences and Competitive Advantage

Listing assets such as factories or cash as core competences.
Students mix up resources and competences.
Fix: Ask whether it is something the firm does well. Assets are resources; the skill in using them is the competence.
Naming a competence but not testing it.
Students rely on recall of the theory.
Fix: Apply each of the three tests to scenario facts and give a verdict.
Treating every strength as a core competence.
Wish to show many points.
Fix: A core competence must be hard to imitate and give customer value across markets. Label others as threshold or ordinary.
Ignoring sustainability.
Students stop once the strength is found.
Fix: Always explain why rivals cannot easily copy it, or why they might, and what the firm should do to protect it.
Confusing core competence with Kay's capabilities without explaining either.
Both seem to mean strengths.
Fix: Name the model you use and apply its own terms. Prahalad and Hamel focus on collective skills; Kay focuses on architecture, reputation and innovation.
Giving theory with no recommendation.
Fear of being wrong in advice.
Fix: Finish with advice on how to exploit, protect or develop the competence, with a brief risk.

Worked examples

Example 1

Zenith Optics, a lens maker, has a team that has spent twenty years learning to grind and coat lenses to extreme precision. Its lenses are used in cameras, medical scopes and telescopes. Rivals have tried to hire its engineers without success because the skill depends on how teams work together. Assess whether this is a core competence.

Show the solution

Identify the candidate: precision lens grinding and coating, built by collective learning. This is an activity, so it is a competence, not an asset.
Test 1, access to markets: it is already used in cameras, medical scopes and telescopes, so it opens many markets.
Test 2, customer benefit: precision directly improves image quality, which customers value in each product.
Test 3, difficult to imitate: the skill is tacit and depends on teamwork, so hiring individuals does not copy it.
Conclude on sustainability: it meets all three tests, so it is likely to support sustainable advantage, provided Zenith keeps its teams stable and keeps learning.

Answer: Yes. Precision lens grinding and coating is a core competence because it meets all three Prahalad and Hamel tests. Zenith should protect it by retaining teams and investing in learning.

Example 2

Harbour Foods sells premium sauces. Its brand is trusted for forty years. It buys tomatoes from a small group of farmers who have worked with it for decades and share quality data. It launches several new flavours each year. Explain which of Kay's distinctive capabilities it has and how they support advantage.

Show the solution

Recall Kay's three sources: architecture, reputation, innovation.
Architecture: long-term relationships with farmers and shared quality data form a network that rivals cannot quickly rebuild. It supports consistent quality.
Reputation: forty years of trusted quality lets Harbour charge a premium and reassures customers who cannot test quality before purchase.
Innovation: regular new flavours keep the range fresh. Flavours can be copied, so this is weaker unless it is protected or hard to match in speed.
Judge: architecture and reputation are strongest because they build up over time and are difficult to copy.

Answer: Harbour has all three. Architecture and reputation are the strongest distinctive capabilities because they take years to build. Innovation helps but is easier to copy, so Harbour should keep investing in it and protect its supplier network and brand.

Exam tips

In SBL, always tie the competence to scenario facts. Generic theory earns few marks.
Use the three Prahalad and Hamel tests as a visible structure; markers can see you applying them.
Show professional skills: weigh evidence, challenge whether a claimed strength is truly hard to copy, and give clear advice.
Mention risks such as core rigidity, where a competence becomes a barrier to change, to show commercial awareness.
Link the competence to strategy options such as diversification, outsourcing non-core activities or entering new markets.

Practice questions from The internal resources, capabilities and competences of an organisation

Core Competences and Competitive Advantage: frequently asked questions

What is the difference between a core competence and a capability?

A competence is a skill or bundle of skills in doing something well. A capability is the wider ability to deploy resources and competences to meet customer needs. A core competence is one that is also valuable across markets and hard to copy. In exams, state which model you are using.

How do I identify core competences in the SBL case study?

Look for activities the firm does unusually well that customers value and rivals struggle to copy. Test each one against Prahalad and Hamel's three tests. Ignore plain assets and ordinary activities.

Are Kay's distinctive capabilities the same as core competences?

They are related but not identical. Kay stresses architecture, reputation and innovation as sources of sustainable advantage. Prahalad and Hamel stress collective learning that opens many markets. Both focus on what rivals cannot easily imitate.

Does a core competence guarantee competitive advantage?

No. Advantage lasts only if the competence stays hard to imitate, keeps delivering customer value and is exploited by structure and strategy. Competences can erode if staff leave or the market changes.