Lesson 4 of 12
Growth strategy case interview: framework and worked example
Growth strategy cases ask how a company can grow its revenue, usually toward a specific target. This lesson gives you a framework for laying out every growth option, a way to size and prioritize them, and a full example with real math.
Part 1 of 9
What is a growth strategy case?
A growth strategy case asks how a company can grow. Usually there is a target attached: double revenue in five years, add $100M in sales, get growth back above 10%. Your job is to lay out the ways the company could grow, figure out how much each one is worth, and recommend the combination that gets there.
It differs from a profitability case in direction. Profitability cases diagnose what went wrong. Growth cases look forward and ask what could go right, which makes them more open-ended and easier to get lost in without a clear structure.
The skill being tested
Anyone can brainstorm growth ideas. The interviewer is watching whether you can organize them, put a number on each, and pick the few that actually close the gap to the target.
Part 2 of 9
How to spot a growth strategy case
These prompts focus on revenue and the future. Listen for phrases like these:
- The CEO wants to double revenue in five years
- How can we grow faster than the market?
- Growth has stalled at 2% a year
- We need to add $50M in new sales
- What should our growth strategy be?
- The board wants a plan to reach $1B in revenue
If the prompt names one specific market to enter, it is a market entry case instead. If it focuses on profit rather than revenue, start from the profitability framework. Growth cases are the ones where the options are wide open and you have to build the list yourself. Not sure which type a prompt is? The first lesson covers how to identify the case type.
Part 3 of 9
The growth strategy framework
Split growth into what the company can do on its own and what it can get from outside, then break each side into options you can size.
- Revenue growth
- Organic
- Existing customersPrice, frequency, cross-selling
- New customersSegments, regions, channels
- New productsExtensions, new categories
- Inorganic
- AcquisitionsBuy revenue, customers, products
- PartnershipsJoint ventures, licensing
- Organic
Then rank every option by
- Size of prize
- Cost and risk
- Fit
- Time to impact
Organic growth
Growth the company builds itself. Sell more to existing customers through pricing, more frequent purchases, or cross-selling. Win new customers in new segments, regions, or channels. Launch new products. Organic options are usually cheaper and lower risk, but slower.
Inorganic growth
Growth the company buys or borrows. Acquisitions add revenue on day one but cost a lot and carry integration risk. Partnerships, joint ventures, and licensing deals are cheaper ways to reach new customers or capabilities, at the cost of sharing control.
A quick check on risk: the growth matrix
Many candidates also reference the Ansoff matrix, which sorts options by how far they move from the core business. The further from what the company already sells and who it already sells to, the higher the risk.
Size the gap before you brainstorm
If the target is $100M of new revenue and the business will grow $20M on its own, you are looking for $80M. Every option then gets measured against that number, which turns a brainstorm into a plan.
Want to see how this structure compares to the others? The frameworks guide covers them side by side.
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How to solve it, step by step
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Clarify the target
Confirm how much growth, by when, and whether it is revenue or profit. Ask about constraints, like a budget limit, no appetite for acquisitions, or a need to protect margins.
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Understand the baseline
Find out where revenue comes from today and how fast each part is growing or shrinking. This tells you what the business will do if nothing changes.
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Size the gap
Subtract where the business is heading on its own from the target. That gap is what your growth options need to fill.
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Lay out and size the options
Use the framework to list organic and inorganic options, then put a rough revenue number and cost on the most promising ones.
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Prioritize and recommend
Pick the combination that closes the gap at the best mix of cost, risk, and speed. Name the risks and what you would do if an option falls short.
Part 5 of 9
Worked example: LumaSkin
Try each question on your own before you reveal the answer. Say it out loud if you can, the way you would in an interview.
Case prompt
Your client is LumaSkin, a US skincare brand with $200M in annual revenue. Most of its sales come through department stores. The CEO wants to reach $300M in revenue within three years and has asked you to build the plan to get there.
Question 1
How would you structure this problem?
A strong answer confirms the target first: $300M in revenue in three years, with no hard limit on investment. Then it sets up the problem in two parts:
- Baseline: how much revenue comes from each channel today, how fast each is growing, and where LumaSkin lands in three years if nothing changes.
- Organic options: sell more to existing customers (pricing, bundles, subscriptions), reach new customers (new retail partners, direct online sales, new countries), and launch new products (new lines or new customer groups).
- Inorganic options: acquire a brand that adds revenue or a new customer base, or partner with a retailer or distributor.
A good candidate then says they want to start with the baseline, since the size of the gap decides how aggressive the plan needs to be.
Question 2
Using Exhibit 1, where does LumaSkin land in three years if nothing changes, and how big is the gap to $300M?
Exhibit 1: LumaSkin revenue by channel
| Channel | Revenue today ($M) | Expected annual growth |
|---|---|---|
| Department stores | 120 | -5% |
| Direct online sales | 50 | +20% |
| Specialty beauty stores | 30 | 0% |
| Total | 200 |
Case data is illustrative.
Direct online: $50M, then $60M, then $72M, then about $86M
Specialty beauty: flat at $30M
Year 3 total: $103M + $86M + $30M = about $219M
Gap to target: $300M - $219M = about $81M
If nothing changes, LumaSkin reaches about $219M, which covers less than a fifth of the $100M increase the CEO wants. Strong online growth is mostly canceling out the decline in department stores.
The takeaway to say out loud: LumaSkin needs about $81M of new revenue from growth initiatives, and department stores are not going to help.
Question 3
A national specialty beauty chain carries LumaSkin in 300 of its stores. It has offered to stock LumaSkin in all 1,000 of its stores. New stores are expected to sell about 80% as much as current ones. How much revenue would this add?
Revenue per new store: $100K x 80% = $80K
New stores: 1,000 - 300 = 700
Added revenue: 700 x $80K = $56M
This one option closes about two thirds of the $81M gap. It is also low risk: it sells existing products through a partner LumaSkin already works with, which puts it squarely in the market penetration box.
A strong candidate also flags the sensitivity. Every 10 points that new stores fall short of 80% costs about $7M (700 stores x $10K).
Question 4
Exhibit 2 shows the team's full list of options. The CEO walks into the room. What is your recommendation?
Exhibit 2: Growth options ($M)
| Option | Added revenue by year 3 | Upfront investment |
|---|---|---|
| Expand to all 1,000 specialty stores | 56 | 8 |
| Launch a men's skincare line | 15 | 10 |
| Sell online in Canada and the UK | 12 | 6 |
| Acquire a clean beauty brand | 40 | 200 |
Case data is illustrative.
"LumaSkin can reach $300M in three years with three organic moves and no acquisition.
If nothing changes, revenue only gets to about $219M, because department store declines are canceling out online growth. That leaves an $81M gap. Expanding into all 1,000 specialty beauty stores adds about $56M, launching a men's line adds $15M, and selling online in Canada and the UK adds $12M. Together that is $83M, which gets us to about $302M for a total investment of $24M. The acquisition would add $40M but costs $200M, more than eight times as much.
The main risk is that the plan has almost no cushion. If new specialty stores sell less than expected, we fall short, since every 10 points below target costs about $7M. We should also watch for department stores reacting to the specialty expansion. So I'd start the specialty rollout first, track sales per new store closely, and begin screening smaller acquisition targets now as a backup if the organic plan falls behind."
Why this works: it opens with a plan that hits the number, shows the math behind each piece, compares cost, and admits the plan is tight with a backup ready.
Part 6 of 9
Common mistakes
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Brainstorming without a number
A long list of ideas with no sizing gives the interviewer no way to tell which ones matter.
Instead: size the gap first, then put a rough number on each option.
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Ignoring the baseline
Assuming revenue stays flat would have made LumaSkin's gap look like $100M instead of $81M.
Instead: project each part of the business forward before sizing the gap.
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Covering only half the options
Candidates often list only organic ideas, or jump straight to acquisitions.
Instead: lay out both organic and inorganic paths, then let the numbers decide.
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Recommending everything
Suggesting all eight ideas at once is not a strategy, and no company can execute it.
Instead: pick the smallest set of options that closes the gap and explain why.
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Missing cannibalization
New channels and products can steal sales from existing ones instead of adding new revenue.
Instead: ask how much of each option's revenue is truly new.
Part 7 of 9
Variations you'll see
The same framework handles every version below. What changes is how much weight the baseline and the target carry.
- Hit a revenue target
- The classic form, like the LumaSkin example. Size the gap, then fill it.
- Restart stalled growth
- "Growth has slowed to 2% a year." Diagnose why first, since the fix depends on whether the market slowed or the company lost share.
- Grow one product or unit
- The same framework, applied to a single business line. Watch for effects on the rest of the company.
- Growth through acquisition
- The CEO has already decided to buy. The case becomes about screening targets and what to pay for them, which the mergers and acquisitions lesson covers.
- Growth versus profit
- The company is growing but margins are shrinking. Bring in the profitability framework to check whether the growth is worth it.
Part 8 of 9
Practice what you learned
Reading a framework is not the same as using it under time pressure. Put this lesson to work:
Try a full case
More ways to practice
Part 9 of 9
Frequently asked questions
What is the growth strategy framework in a case interview?
It splits growth into organic and inorganic paths. Organic growth comes from selling more to existing customers, reaching new customers, and launching new products. Inorganic growth comes from acquisitions and partnerships. Each option is then ranked by size of prize, cost and risk, fit, and time to impact.
How do you structure a growth strategy case?
Clarify the target and timeframe, project where the business lands if nothing changes, size the gap to the target, lay out and size organic and inorganic options, then recommend the combination that closes the gap with the best balance of cost, risk, and speed.
What is the Ansoff matrix and should I use it?
The Ansoff matrix sorts growth options by whether they involve existing or new products and existing or new markets, from market penetration (lowest risk) to diversification (highest risk). It is a useful way to talk about risk, but tailor your structure to the client rather than reciting the matrix on its own.
What is the difference between organic and inorganic growth?
Organic growth is growth a company builds itself, like new products, new channels, or selling more to current customers. Inorganic growth comes from outside the company, mainly acquisitions and partnerships. Organic growth is usually cheaper and lower risk, while inorganic growth is faster.
How is a growth strategy case different from a market entry case?
A growth strategy case asks how a company can grow overall and compares many options. A market entry case evaluates one specific market the company is considering, which is just one of the options a growth case might include.
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