Mullins’ seven domains model tests a new business idea in seven areas: the market and the industry, each at a macro and a micro level, plus three about the team: its mission and appetite for risk, its ability to execute, and its connections. John Mullins of London Business School set it out in his book The New Business Road Test; the third edition (2010) introduced a revised version of the model.
At the macro level, look at the size and growth of the market. At the micro level, ask whether a specific customer segment has a pain it will pay to solve.
02
Industry domains
At the macro level, judge the industry's structure and economics. At the micro level, ask whether you have an advantage others cannot easily copy.
03
Team domains
Check what the founders want and how much risk they accept, whether they can execute the few things that matter, and who they know up and down the value chain.
04
Weigh the whole
A weak domain is not always fatal, but a fatal flaw in one area cannot be offset by strength in others.
Where you see it today
AI start-ups and the big labs
The micro-industry question, “how long will your advantage last?”, is the hardest one for many AI products. A feature built on someone else’s model can be copied when the model provider ships it, so founders need a source of advantage beyond the model.
Demo vs demand
A strong AI demo can make a micro-market look validated when it is not. Mullins’ “will the fish bite?” test asks for evidence that named customers will pay, not that they were impressed.
Desk research with AI
Language models can draft macro market and industry reviews quickly. They cannot do the customer interviews the micro domains require, and their market figures need checking against primary sources.
Corporate ventures
The book is aimed at executives as well as founders. Corporate teams launching AI products can use the team domains to ask whether they have the connections and execution skills a start-up would need.
Write one page per domain and mark each as strong, uncertain or a possible fatal flaw.
Test the micro-market with interviews and pre-orders, not with surveys of friends.
For any AI product, write down what stops the model provider or a larger rival from copying it.
Be honest about the team domains: list the critical tasks and who on the team has done each before.
Revisit the weakest domain first, before refining the strong ones.
The Business Engineer lens
In the AI economy the seven domains shift fast: the big labs can reshape an industry in one release, so the micro-industry domain needs rechecking often. The Business Engineer’s view is that defensibility for AI start-ups comes from distribution, data and workflow ownership more than from the model itself.
A framework from John Mullins of London Business School that assesses a business idea across market, industry and team domains before a business plan is written.
What are the seven domains?
Macro market, micro market, macro industry, micro industry, the team's mission and risk appetite, its ability to execute, and its connections.
The complete explainer, cleaned up and reformatted for mobile.
BUSINESS MODEL
Mullins’ Seven Domains model
The Mullins’ Seven Domains model was created by John Mullins – a professor at London Business School – and outlined in his 2017 book The New Business Road Test: What Entrepreneurs Should Do Before Launching A Lean Start-up. The Mullins’ Seven Domains model is used by entrepreneurs to determine whether a new business idea is viable. Mullins believes that opportunities are best understood in the context of three important elements: markets, industries, and one or more key people within the organization.
The Mullins’ Seven Domains model assesses an idea from seven perspectives (domains):
How should the Mullins’ Seven Domains model be interpreted?
For those who are less acquainted with the model, it may appear that Mullins has simply summarised what most people know about starting a new company and evaluating ideas.
When To Use
▶– Useful for strategic planning and decision-making
▶– Useful for startups and established businesses looking to pivot or optimize their strategy
The Mullins’ Seven Domains model is used by entrepreneurs to determine whether a new business idea is viable.
What is the seven domains of the mullins model?
The Mullins’ Seven Domains model assesses an idea from seven perspectives (domains):
How should the Mullins’ Seven Domains model be interpreted?
For those who are less acquainted with the model, it may appear that Mullins has simply summarised what most people know about starting a new company and evaluating ideas.
Key Insight
The Mullins’ Seven Domains model was created by John Mullins – a professor at London Business School – and outlined in his 2017 book The New Business Road Test: What Entrepreneurs Should Do Before Launching A Lean Start-up.
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FourWeekMBA x Business Engineer | Updated 2026
The Mullins’ Seven Domains model was created by John Mullins – a professor at London Business School – and outlined in his 2017 book The New Business Road Test: What Entrepreneurs Should Do Before Launching A Lean Start-up.
Definition
ExplanationMullins’ Seven Domains model is a framework developed by Jeffrey G. Mullins for analyzing and assessing the feasibility and potential of new business ventures. It identifies seven critical domains that entrepreneurs and investors should evaluate when considering a new business opportunity. This model helps in systematically evaluating the various aspects of a business idea to make informed decisions about its viability.
Key Concepts
Explanation– Market Domain: Examines the target market, customer segments, and market size. – Technical Domain: Focuses on the product or service’s technical feasibility and any necessary technology or innovation. – Product Domain: Evaluates the product or service’s features, benefits, and uniqueness. – Financial Domain: Assesses the financial viability, including revenue streams, costs, and potential profitability. – Team Domain: Considers the skills, experience, and capabilities of the founding team. – Risk Domain: Identifies and evaluates potential risks and uncertainties associated with the venture. – Exit Domain: Examines potential exit strategies, such as acquisition or IPO.
Seven Domains
Explanation– Market Domain: Involves researching and understanding the target market, its size, growth potential, and customer needs. – Technical Domain: Assesses the technical feasibility, potential challenges, and innovation required for the product or service. – Product Domain: Focuses on product features, unique selling points, and differentiation from competitors. – Financial Domain: Analyzes revenue models, cost structures, and financial projections for sustainability. – Team Domain: Considers the skills, experience, and cohesion of the founding team in executing the venture. – Risk Domain: Identifies and evaluates risks related to market dynamics, competition, technology, and other factors. – Exit Domain: Examines potential exit strategies, including acquisition, initial public offering (IPO), or liquidation.
Characteristics
Explanation– Comprehensive Assessment: Mullins’ model provides a systematic and comprehensive assessment of key aspects of a business idea. – Structured Evaluation: It offers a structured approach to evaluate various domains, reducing the chance of overlooking critical factors. – Decision Support: Helps entrepreneurs and investors make informed decisions about pursuing or investing in a venture. – Iterative Process: The evaluation in each domain can be an iterative process, refining the business concept based on findings.
Implications
Explanation– Strategic Direction: The model guides entrepreneurs toward addressing critical domains and making strategic decisions. – Resource Allocation: Helps allocate resources effectively by prioritizing domains that need attention. – Risk Mitigation: Identifies potential risks and uncertainties, allowing proactive risk mitigation strategies. – Investment Decision: Influences investment decisions by providing a holistic view of the venture’s potential.
Advantages
Explanation– Holistic Analysis: Offers a holistic view of a business opportunity by considering multiple critical domains. – Informed Decision-Making: Supports data-driven and well-informed decisions about pursuing or funding a venture. – Risk Management: Helps in identifying and managing risks early in the venture development process. – Resource Efficiency: Enables efficient allocation of resources by focusing on key domains.
Limitations
Explanation– Complexity: Evaluating all seven domains can be time-consuming and may require significant research and analysis. – Subjectivity: Some assessments, such as team capabilities or market projections, can be subjective and dependent on interpretation. – Dynamic Environment: Market conditions and technologies may change rapidly, affecting the accuracy of assessments. – Resource Intensive: Conducting thorough assessments in all domains may require substantial resources.
Applications
Explanation– Entrepreneurs use Mullins’ Seven Domains model to assess and refine their business concepts before launch. – Investors apply it to evaluate startup pitches and make informed investment decisions. – Incubators and accelerators use it as a structured framework for mentoring and guiding startups. – Corporations use the model to assess potential new ventures or innovation projects.
Use Cases
Explanation– An entrepreneur with a new software product idea uses the model to assess the technical feasibility, market demand, and potential risks before seeking funding. – A venture capitalist evaluates a startup’s pitch by considering how well it addresses each of the seven domains. – An innovation lab within a large corporation uses the model to assess the viability of new product concepts. – A startup accelerator provides guidance to its cohort of startups using the seven domains as a structured framework.
Conclusion
ExplanationMullins’ Seven Domains model serves as a valuable tool for systematically evaluating and refining business concepts. By considering critical aspects such as market dynamics, technology feasibility, and financial viability, entrepreneurs and investors can make informed decisions and increase the chances of success in the competitive business landscape. This structured approach helps identify strengths, weaknesses, and areas for improvement in a business opportunity.
Understanding the Mullins’ Seven Domains model
The Mullins’ Seven Domains model is used by entrepreneurs to determine whether a new business idea is viable.
Mullins believes that opportunities are best understood in the context of three important elements: markets, industries, and one or more key people within the organization.
To that end, his model encourages entrepreneurs to answer the following questions (among others):
Is there a market for the product?
Are you the right person to pursue the idea?
What is the level of competition in the industry?
The seven domains of the Mullins model
The Mullins’ Seven Domains model assesses an idea from seven perspectives (domains):
Four pertain to the micro and macro aspects of the environment and industry, and
Three pertain to the internal factors within a team or company.
Below we will take a brief look at each of the seven domains.
Environment and industry
Market attractiveness (market domain/macro level) – this domain deals with data on the number of customers, sales value, and the number of units sold. It also determines whether a market is on the rise or in decline.
Market benefits and attractiveness (market domain/micro level) – this domain involves a more detailed look at the market segment most likely to buy the product or service. How will they benefit? How would the product be different from the competition?
Industry attractiveness (industry domain/macro level) – how many competitors exist in the industry? By extension, how difficult will it be to enter? It is also important to determine whether the buyer or seller has the most power and if the theft of strategies or ideas is commonplace.
Sustainable advantage (industry domain/micro level) – related to this theft is the idea of sustainable advantage. That is, how easily will the competition be able to replicate the new idea? How could the likelihood of this scenario be minimized via patents, finance, or technology?
Team
Mission, aspirations, and propensity for risk – now it is time to turn inward and analyze the start-up team. Are leadership and subordinates committed to making the company’s dreams a reality? How much risk are they ultimately willing to expose themselves to? Is the business in line with the founder’s personal values?
Ability to execute on critical success factors (CSFs) – these denote high-level goals that play a critical role in organizational success. This means determining the decisions that will negatively impact the business when things are going well and conversely, the decisions that will benefit the business when things aren’t going so well. Does the team have the necessary skills to execute in either case?
Consider team connectedness up, down, and across the value chain – in the last domain, Mullins calls on the start-up to analyze its relationships with suppliers, distributors, customers, investors, and other key stakeholders. How might these relationships hurt the business in the future and how can they be mitigated?
How should the Mullins’ Seven Domains model be interpreted?
For those who are less acquainted with the model, it may appear that Mullins has simply summarised what most people know about starting a new company and evaluating ideas.
Upon closer inspection, however, the model makes a few important distinctions:
Industries and markets are not the same and should never be confused.
Industries and markets must be analyzed at both the macro and micro level.
The assessment of an entrepreneur or employee’s capabilities should not be confined to their resume or psychological test results, and
The seven domains are neither equally important nor additive. Furthermore, the model should not be construed as a checklist since strengths in a few domains can compensate for weaknesses in others.
Case Studies
Launching a Health-Tech Startup
Environment and Industry Domains
Market Attractiveness (Macro Level): Evaluate the health-tech market by assessing the number of potential users, projected market growth, and current industry size. Determine if the market is expanding due to increasing health-consciousness and technological advancements.
Market Benefits and Attractiveness (Micro Level): Focus on a specific segment within the health-tech market, such as remote patient monitoring. Analyze how your product’s benefits differ from competitors, such as enhanced accuracy or user-friendliness.
Industry Attractiveness (Macro Level): Investigate the level of competition in the health-tech sector. Research the number of players, their market share, and regulatory barriers. Consider whether established players dominate or if new entrants have opportunities.
Sustainable Advantage (Micro Level): Assess your technology’s defensibility. Can your startup secure patents for unique features? Evaluate if financial resources or partnerships can deter competitors from replicating your solution easily.
Team Domains
Mission, Aspirations, and Propensity for Risk: Examine the founders’ commitment to the startup’s mission. Ensure alignment with the team’s values and aspirations. Assess their willingness to take calculated risks, especially in a regulated industry like healthcare.
Ability to Execute on Critical Success Factors (CSFs): Identify key success factors in the health-tech sector, such as data security and regulatory compliance. Evaluate the team’s expertise in these areas and their ability to navigate complex healthcare regulations.
Team Connectedness up, down, and across the Value Chain: Analyze relationships with healthcare providers, insurers, and potential users. Ensure strong connections and trust exist, as these stakeholders can significantly impact the startup’s success.
Food Delivery Service in a Competitive Market
Market Attractiveness (Macro Level): Assess the food delivery market’s size and growth trends. Consider factors like the number of customers ordering food online and the total market spending on food delivery services.
Market Benefits and Attractiveness (Micro Level): Focus on a specific niche within the food delivery market, such as healthy meal options. Define how your service caters to the unique preferences of health-conscious consumers compared to existing competitors.
Industry Attractiveness (Macro Level): Examine the level of competition among food delivery platforms. Investigate if there are dominant players and whether regulatory challenges exist, such as food safety regulations.
Sustainable Advantage (Micro Level): Determine how your food delivery service can differentiate itself. This could involve partnerships with local farms for fresh ingredients, unique packaging, or an efficient delivery network.
Mission, Aspirations, and Propensity for Risk: Ensure the founders’ mission aligns with providing convenient and healthy food options. Assess their willingness to adapt to evolving consumer preferences and navigate risks like changing food safety regulations.
Ability to Execute on Critical Success Factors (CSFs): Identify critical factors in the food delivery industry, such as timely deliveries and food quality. Evaluate the team’s capabilities in logistics, quality control, and customer service.
Team Connectedness up, down, and across the Value Chain: Establish strong relationships with local restaurants, suppliers, and customers. Collaboration with restaurants to source healthy ingredients and providing feedback mechanisms for customers can enhance the service.
Key takeaways
The Mullins’ Seven Domains model is used by entrepreneurs to determine whether a new business idea is viable.
The Mullins’ Seven Domains model assesses an idea from seven perspectives (domains). Four pertain to micro and macro level factors across the industry and environment, while a further three relate to the team within the start-up.
The Mullins’ Seven Domains model is not a checklist that must be satisfied for organizational success. Nor is it a summary of what most people know about testing a new idea or starting a new company.
Key Highlights
Origin and Purpose: The Mullins’ Seven Domains model was created by John Mullins, a professor at London Business School, outlined in his 2017 book “The New Business Road Test: What Entrepreneurs Should Do Before Launching A Lean Start-up”. This model helps entrepreneurs assess the viability of a new business idea.
Context of Opportunities: Mullins believes that opportunities are best understood within the context of markets, industries, and key people within the organization.
Model’s Structure and Focus:
The model assesses the idea from seven perspectives, divided into two categories: environment and industry, and internal team factors.
The four domains related to the environment and industry include:
Market Attractiveness (macro level)
Market Benefits and Attractiveness (micro level)
Industry Attractiveness (macro level)
Sustainable Advantage (micro level)
The three domains related to the team include:
Mission, Aspirations, and Propensity for Risk
Ability to Execute on Critical Success Factors (CSFs)
Team Connectedness up, down, and across the Value Chain
Interpretation and Significance:
The model goes beyond conventional knowledge by emphasizing distinctions between industries and markets, analyzing both macro and micro aspects, and considering team capabilities beyond resume and tests.
The domains are not equally important, and strengths in some domains can compensate for weaknesses in others.
The model is not a checklist but rather a comprehensive tool for evaluating new business ideas.
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When to Apply– Apply to assess internal and external factors affecting the business. – Useful for strategic planning and decision-making.
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When to Apply– Apply to evaluate product lines or business units for resource allocation and strategic planning. – Useful for portfolio management.
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Gennaro Cuofano is a CRO and tech executive who has worked in AI since late 2015, starting with bringing NLP, natural-language generation, voice and chatbot products to the marketing industry. His background is in law and finance: he holds a Master's degree in Law and an International MBA with an emphasis on corporate finance (LUISS Business School and the University of San Diego, 2012), and worked as a financial analyst at a real-estate investment firm in San Diego and as an assistant controller. His work focuses on business model strategy, business engineering and, more broadly, structural analysis: how companies make money, read from their own filings. He created FourWeekMBA and leads research there and at The Business Engineer, his newsletter on AI and business strategy, with over 95,000 subscribers and more than 1,000 published analyses. His writing has also appeared on Entrepreneur (for example, How to Digitize a Family Business in Europe) and HackerNoon. Find him on LinkedIn and Substack. See how we source.
