3 Key Questions to Validate Your Business Idea

Why these questions about Your Solution, Your Customer, and Who Pays You matter

Before diving into the three core questions, it helps to understand why they matter. When you invent something — whether it's a device, a new technology, or a clever method — for the inventor it's natural to focus on how it works. But customers don't buy technology. They buy a solution to their own problem.

There are many different ideas about the concept of market, but for the questions you need to ask here, it's not that difficult: market simply means: who exactly will use your solution, and why? And when I talk about a “business model”, I mean something very simple: who will pay you, and how will the money come in?

These questions protect you from spending years developing something that people admire.... but don't actually buy. They help you shift from thinking about your invention to thinking like your future customer.

To make money with your invention or business idea you can follow different strategic paths. On our homepage, I have introduced three main strategies that are further elaborated on the following pages:

• Selling an Idea
• Build to Sell
• Start, Grow and Scale

Each strategy requires a different level of development, validation, investment and.....luck. However, they all begin with the same three foundational questions about your product, your market, and your business model. Later in this Startup cluster, you will find strategy-specific checklists and Minimal Viable Product (MVP) pages that build upon these fundamentals.

The Three Foundational Questions to test your business idea

So, to validate any idea—whether a simple concept or a high-tech invention—you must answer three core questions:

Question 1. Does the product solve a real problem?

What problem does your product solve? The success of any product in the market depends on how well it satisfies customer needs. Therefore, it is important to clearly identify the problem your product solves, whether it is a product or a service.

Remember to focus on the customer's problem rather than the technical details of the product. Instead of saying, for example, "Our product uses infrared laser technology to achieve 15% more accurate measurements, requiring fewer checks," emphasize the benefit to the customer. For instance, you could say, "Our product saves 10% of your time and 25% of your costs with faster and more reliable measurements."

It is very important to communicate the benefits of your product in concrete terms, such as faster, lighter, safer, smaller, simpler, more reliable, or easier to use.

High-tech companies often struggle to attract enough customers due to the failure to clearly communicate the benefits of their new technology. This is often because they focus too much on the technical details and underestimate the importance of communicating the solution to the customer's problem or need. It is important to conduct thorough preliminary work to clearly identify the customer's problem or need and to communicate how your product can solve it. Avoid the temptation to rely solely on slick powerpoint presentations and instead focus on listening to the customer and communicating the benefits of your product to your potential buyers.

Question 2. Is there a market that wants it?

A good idea is not enough if no one is willing to pay for it. So start with the basics: who exactly is the group of people or organisations that would want your solution, how large is that group, and where are they located? Are they spread across the world, or mainly in your region? And just as important: can you reach them easily, and can you actually deliver your product or service to them in a practical way?

What problem do they experience today, and how painful is it for them? People only buy something if it solves a real irritation, need, or risk. Try to understand the daily reality of your future customer: what is difficult, slow, expensive, or frustrating for them?

How are they solving this problem right now? If there are already decent alternatives, then you will need a clear and convincing reason why they should switch to your solution.

You may sometimes hear terms like “total addressable market” or “market size”. That's useful later — but not now. At this early stage, it's enough to understand whether there are real people who want your solution, can find you, and will actually pay you.

Don't aim for perfect numbers. Rough, honest estimates are fine. What matters is knowing whether demand exists at all.

Question 3. How will the business model make money?

Many first-time founders think a business model is something complicated, but at this stage it's actually very simple. It answers just three questions: who will pay you, why will they pay you, and how will the money come in?

Start by identifying who opens their wallet. Is it the user, a company, a hospital, a distributor, a government agency, or someone else? Then explain why they would pay. Do they save time, reduce risk, earn more money, or avoid a problem by using your solution?

Next, think about the practical side: how will the payment work? Do you sell your product once? Do customers pay per use, per month, per year, or perhaps per result (e.g., cost savings or performance)? There is no right or wrong model here—what matters is that it fits the way your customer already buys similar things.

Also think about what your product might realistically cost to produce and what a reasonable selling price could be. These numbers don't have to be perfect, but they should make sense. If it costs €100 to make and people are only willing to pay €20, you have a problem that no investor can fix.

This early version of your business model does not need to be detailed. It just needs to show that money can flow in faster than it flows out. Later on, you'll refine this into a full business model and eventually connect it to your valuation and funding strategy.

Practical Feasibility: A First-Round Checklist

Once you've explored the three core questions, you should be able to answer the following:

1. Who is your target customer?
2. What problem are you solving, and why would customers buy your product?
3. What is innovative about your idea?
4. Why is your solution better than existing alternatives?
5. Is your idea unique enough to protect (e.g., patentable)?
6. What could the selling price and cost price roughly be?
7. What competitive advantage prevents easy replication?

This initial analysis does not need to be perfect - it needs to be honest. It forms the foundation for later steps like your your Minimal Viable Product (MVP), business model, Proof of Concept, and Patent strategy.

What You Can Explore Next for the monetization of your invention?

Now that you understand the three core questions every inventor or first-time founder should ask, you may want to dive a little deeper. Depending on what you want to do with your idea — sell it, build a company around it, or develop it just far enough to attract partners — there are different next steps you can take. On the following pages, you'll find practical guides that build directly on what you've learned here.

• Strategy-specific validation questions — what you need to check if you want to Sell an Idea, Build to Sell, or Start-Grow-Scale.
• What is a Minimal Viable Product (MVP)? An explanation of the MVP and how it helps you test your idea quickly and cheaply.
• MVP per strategy: how an MVP looks very different depending on which of the three strategies you choose.

Along the way, you may also run into questions about funding, intellectual property or valuation. Those topics are covered in the Capital, IP and Valuation sections of the site. You don't have to explore everything at once. Just follow the path that matches the way you hope to make money with your invention.

Next Steps to earn money with your invention: Turning Questions into a Plan

Once you've answered the three core questions — your solution, your customer, and who pays you — you can start turning your idea into a concrete plan. These steps are not complicated, and you don't need to complete them perfectly. They simply help you move from “I think this could work” to “I know what to do next.”

Step 1: Check novelty

Before investing time and money, check whether something similar already exists. Look at competing products, browse the internet, and take a quick look at patent databases. The goal is not to become an IP expert — just to understand whether your idea is new enough to matter, and whether it might even be protectable.

Step 2: Assess feasibility

Ask yourself: can this actually be built with realistic effort and cost? And if it can be built, would people really use or buy it? This is where a bit of honest self-reflection helps. Many ideas fail not because they are bad, but because they require impossible technologies, extremely high development costs, or customers who are very hard to reach.

Step 3: Develop your business model

Now that you understand what your solution does and who wants it, think about how money will actually flow. Who pays? How much? One time or recurring? Directly or through partners? Your answers don't need to be detailed yet — but they should make sense to a normal person. Later on, you will refine this into a complete business model that also connects to valuation and funding needs.

Step 4: Build and demonstrate a Proof of Concept

A Proof of Concept (PoC) is a simple demonstration that your idea actually works in the real world. It does not need to be pretty. It does not need to be a fully functioning product. It only needs to show that the core principle is sound. This is the point where investors and partners stop listening politely and start taking you seriously.

Step 5: Assemble the right team

No matter how strong your idea is, you won't get far alone. At some point, you need people with complementary skills — technical, commercial, operational, or strategic. Investors often look at the team even before they look at the technology, because a strong team can adapt, solve problems, and keep going when things get difficult.