How to Run Customer Interviews That Actually Yield Useful Insights
Talking to customers is one of the most effective ways to validate a business idea.
However, many interviews fail to produce useful information.
Why does this happen?
Because it is very easy to ask questions that confirm what we want to hear instead of uncovering reality.
A well-conducted interview can help you understand whether a real problem exists, how people experience it, and whether your idea makes sense.
In this article you will learn how to run customer interviews that actually yield useful insights.
The goal is not to validate your idea — it is to understand the problem
One of the most common mistakes is trying to validate the idea directly.
For example, by asking:
- Do you think this is a good idea?
- Would you use this product?
- Do you like this solution?
The problem is that most people will respond positively out of politeness.
Instead, the goal should be to understand the problem.
Talk to people who actually have the problem
Not all opinions are equally useful.
Talking to friends or family can give a false sense of validation.
What matters most is talking to people who:
- have the problem
- experience it frequently
- are trying to solve it
These conversations are much more valuable.
Ask open-ended questions
The best interviews are built on open-ended questions.
Some examples:
- How do you currently solve this problem?
- What frustrates you most about that solution?
- When was the last time this happened to you?
- How does this problem affect your day-to-day?
These types of questions allow you to get deeper and more genuine answers.
Avoid talking too much about your solution
It is tempting to explain your idea during the interview.
However, the more you talk about the solution, the less you learn about the problem.
In the early conversations it is better to focus on understanding the customer's current situation.
Pay attention to what people do, not just what they say
People do not always act the way they say they will.
That is why it is important to observe:
- what tools they use
- how they solve the problem
- what alternatives they have tried
Actual behavior is usually more reliable than opinions.
Look for patterns, not isolated opinions
A single interview is not enough on its own.
What matters is identifying patterns that repeat across different people.
For example:
- same problem
- same frustration
- same current solutions
When several people agree, it is more likely that a real opportunity exists.
Do not try to sell during the interview
The goal of the interview is not to close a sale.
Trying to sell too early can bias the responses.
You need to understand the problem first before offering a solution.
How many interviews do you need
There is no exact number, but often between 10 and 20 well-conducted interviews can provide very valuable information.
What matters is the quality of the conversations, not the quantity.
How Foundeia can help you in this process
One of the biggest challenges when conducting interviews is knowing what to ask and how to interpret the information.
Tools like Foundeia help structure this process by guiding aspects such as:
- what questions to ask
- what information to analyze
- how to identify patterns
- how to make decisions based on the data
This allows you to turn conversations into actionable learning.
Customer interviews are a powerful tool for validating an idea.
When done well, they allow you to understand the problem from the user's perspective and make more informed decisions.
The key is not to confirm your idea, but to discover the reality of the market.
Frequently asked questions
When should I start doing customer interviews?
As early as possible, even before building any product.
Should I show my idea during the interview?
In the early stages it is better to focus on the problem rather than the solution.
What if the responses are negative?
That is very valuable information that can help you adjust the idea before investing more time or resources.