IB Business Management HLUnit 1.5 — Growth and EvolutionPaper 1 & 2Core idea~12 min read
Internal and External Routes to Growth
A firm that wants to be twice its current size has two ways to get there. It can build the second half itself, slowly, out of its own profits. Or it can buy a business that already exists and bolt it on. One is patient and safe. The other is fast and risky. Almost every growth question in this unit comes down to that trade-off.
📘 What you need to know
Internal (organic) growth comes from within: new stores, new products, new markets, new machinery.
External (inorganic) growth comes from joining with another firm: mergers, acquisitions, integration.
A merger is mutual; an acquisition is one firm taking control by buying over 50% of the shares.
Takeovers can be friendly (the target’s board agrees) or hostile (it does not).
Vertical integration joins different stages of the same supply chain, either forward or backward.
Horizontal integration joins firms at the same stage. Conglomerate integration joins unrelated industries.
Joint ventures create a new shared entity. Strategic alliances do not. Franchising sells the right to use a proven model.
Internal growth: build it yourself
Organic growth is the firm doing more of what it already does. It opens another branch, adds a product line, sells into a new country, or invests in machinery that lets it produce more.
Advantages
Disadvantages
The pace is manageable, so systems and culture keep up
Slow, and rivals may take the market first
Usually financed from retained profit, so less debt and less risk
Retained profit limits how fast the firm can move
Management already understands every part of the business
Economies of scale arrive gradually rather than overnight
No culture clash, because there is no second organisation
Access to outside finance can still be restricted
If a case study firm is described as family-run, cautious, or proud of its way of doing things, organic growth is usually the answer the evidence supports. Buying another company would import a second set of habits that the family has no way of controlling.
External growth: buy it instead
External growth means combining with another business. It is fast, and that speed is the whole appeal — a firm can gain a distribution network, a factory or a customer base in a single transaction.
Term
What it means
What to watch for
Merger
Two firms agree to combine into one new business
Both boards consent, so integration is usually smoother
Acquisition
One firm buys over 50% of another’s shares and takes control
The buyer decides; the target may resist
Friendly takeover
The target’s directors approve and recommend the offer
Staff and customers are told a coherent story
Hostile takeover
The bidder goes directly to shareholders against the board’s wishes
Expensive, and the acquired management often leaves
Vertical integration: moving along your own supply chain
Every product passes through a chain of stages. Vertical integration means buying a business at a different stage of that chain from your own.
Backward means moving towards your raw materials. Forward means moving towards your customer. Decide which direction the firm is travelling before you name it.
Type
Example
Main benefit
Backward vertical
An ice cream maker buys a dairy farm
Secure supply, controlled quality, no supplier mark-up
Forward vertical
A dairy farm buys an ice cream shop chain
Guaranteed route to market and the retailer’s margin
Horizontal and conglomerate integration
Naming the type is worth a mark. Explaining what the firm gains from that particular type is worth the rest.
Type of growth
Advantages
Disadvantages
Vertical integration
Removes a middle firm’s margin, secures supply or sales, controls quality
New stage may need skills the firm lacks; duplicated management roles
Horizontal integration
Market share rises fast, a competitor is removed, economies of scale arrive at once
Regulators may object; two workforces with different cultures must merge
Conglomerate integration
Spreads risk across unrelated markets, opens new sources of growth
Little expertise in the new industry; diseconomies develop quickly
Culture clash is the answer to most “why did the merger disappoint?” questions. Two sets of habits, two pay structures, two ways of making decisions. The financial case can be flawless and the integration still fail on the ground.
Joining forces without a takeover
Not all external growth involves buying anybody. Three arrangements let firms combine strengths while staying separate businesses.
Arrangement
How it works
Why firms choose it
Joint venture
Two firms create a new, jointly owned business for an agreed purpose
Shares cost and risk; often the only legal way into some foreign markets
Strategic alliance
Firms cooperate on a specific project with no new company formed
Flexible and quick to end once the goal is met
Franchising
A franchisee pays a fee and royalties to trade under a proven brand
Rapid expansion funded largely by the franchisees themselves
Difference
Joint venture
Strategic alliance
Legal structure
A new separate legal entity is created
No new entity; each firm stays as it is
Ownership
The partners jointly own and control the venture
Each partner keeps full ownership and control
Duration
Usually long term, often years
Often tied to one project and ended afterwards
Scope
Broad cooperation across several activities
Narrow, focused on one agreed area
Franchising is the one students most often mis-label. It is not a form of ownership like a partnership or a company. The franchisee still has to be a sole trader, partnership or limited company in its own right — franchising is simply how that business gets its product and brand.
Franchising: the franchisor’s view
Advantages
Disadvantages
Speed and money
Expansion is funded by franchisees, so growth is fast and cheap
Profits are shared, so each outlet earns less than a company-owned one
Local knowledge
Franchisees know their own town and are highly motivated owners
Less direct control over standards and consistency
Brand
Every new outlet raises brand visibility
One badly run outlet damages the reputation of the whole network
🧩 How to identify the type of growth in a case study
Did another business change hands? If not, it is internal growth — stop there.
If yes, are the two firms at the same stage of the chain? That is horizontal.
Different stage, same chain? That is vertical — now decide forward or backward.
No connection at all? Conglomerate.
Did they form a new company together instead? Joint venture, not a takeover.
Name it, then explain the benefit that specific type delivers. The explanation carries the marks.
EXAM-STYLE
Distinguish between internal and external growth. [4]
Internal growth
The firm expands using its own resources, for example by opening new outlets or adding products, financed mainly from retained profit.
External growth
The firm expands by combining with another business through a merger or acquisition, gaining that firm’s assets and customers at once.
The practical differenceinternal → slower but controlled; external → faster but riskierOne builds capacity, the other buys it
EXAM-STYLE
Discuss whether a coffee roaster should grow by acquiring a chain of cafes. [10]
The roaster currently sells wholesale to independent cafes and has strong cash reserves.
Name the type
Buying cafes is forward vertical integration: the roaster is moving towards its final customer.
The case forroaster margin + cafe margin → both stay inside one businessIt also guarantees an outlet for the beans and gives direct contact with drinkers, which improves product decisions.The case against
Running cafes is a service business with rent, shift rotas and customer complaints. The roaster has no experience of any of it.
The stakeholder risk
Its existing independent customers now find their supplier is also their competitor, and some will switch to another roaster.
A safer alternative
Buy two cafes as a trial rather than a chain, keeping wholesale relationships intact while the firm learns retail.
Worth doing on a small scale first — the strategy is sound but the operating skills are missing
💡 Exam tip
Name the type of integration precisely. “Forward vertical integration” earns more than “a takeover”.
Direction is judged from the buying firm. Ask whether it is moving towards its materials or towards its customers.
Mention culture clash whenever two firms combine. It is the most common real-world reason mergers underperform.
Say who funds the growth. Cash reserves, a loan and a share issue carry different risks.
Franchising is not an ownership structure. Do not list it alongside sole trader and partnership.
For discuss questions, offer a smaller version of the plan as your evaluation — it shows judgement rather than a flat no.
⚠ Common mix-up
Merger and acquisition are not the same. A merger is agreed; an acquisition may be resisted.
Backward and forward get reversed constantly. Backward heads towards raw materials.
Horizontal is not “the same company getting bigger”. It needs a second firm at the same stage.
Conglomerate integration is not diversification within an industry. The industries must be unrelated.
Joint ventures create a new business; alliances do not. That is the cleanest way to tell them apart.
Opening a new branch abroad is still internal growth. International does not mean external.
Up next: Multinationals and Their Impact — when external growth crosses borders, a firm becomes a multinational, and the debate shifts from cost savings to what these companies do to the countries that host them.
Want this explained one-to-one?
Book a free session with an experienced IB Business Management tutor and get your trickiest topics made simple.
