What Is a PoC (Proof of Concept)

When I worked at StarLeaf, I learned how critical a good demo and a structured Proof of Concept, often shortened to PoC, can be when it comes to winning the right customers. When you are selling a premium solution at the higher end of the market, it is not enough to simply say that the solution works. Customers need to experience it themselves, within their own environment, with their own users, requirements, and internal processes.

The purpose of a PoC is to determine whether the customer is actually the right fit for the vendor, just as much as whether the vendor is the right fit for the customer. A good PoC is therefore not just a free trial with some technical decoration added on top. It is a mutual evaluation where both sides get to test whether the solution, the collaboration, and expectations align.

A PoC Is More Than a Technical Test

Many people think of a PoC as a way to prove that a product works. That is only half the picture. In practice, a good PoC is just as much about reducing risk, building trust, and uncovering whether an organization is actually ready to adopt the solution.

The technology itself may work perfectly, yet the PoC can still fail if the wrong people are involved, if the goals are unclear, or if the customer has not clarified what actually happens after the test phase. Often, it is not the product that causes the process to fail. It is everything around it.

Trust Has Become More Important

Salesforce states in State of the AI Connected Customer that 61% of customers believe that developments in AI make it even more important for companies to be trustworthy. Another 72% say that it matters whether they know they are communicating with an AI agent. While these findings are related to AI, they point toward something larger: customers want to understand what they are getting into, who they are dealing with, and whether a provider is transparent enough to deserve their trust.

Why a PoC Should Start Before the Actual Test

A PoC should not begin with installation, technical setup, or a calendar invitation. It should begin with clarification and discussion. What exactly should be tested? Who will evaluate it? What defines success? What happens if the test succeeds? And perhaps just as importantly, has the customer fully understood the pricing model before the process begins?

I learned early on that a PoC without financial clarity can quickly become a free consulting exercise. Once the customer has seen and accepted the framework for pricing, delivery, and the next steps, the process becomes much more realistic. At that point, you are no longer just testing an idea. You are testing a potential partnership.

Five Steps to a Better PoC

1. Identify the Right People Within the Customer Organization

A PoC rarely becomes better than the people involved in it. That is why the right roles need to be involved from the beginning. Decision-makers need to understand why the test is being conducted. Project managers or department leaders need to ensure internal alignment. Technical resources need to evaluate integrations, security, and practical implementation. Users need to actually use the solution the way it is intended to be used.

If only the technical department tests the solution, you may end up with a technical yes and an organizational no. If only management is involved, you may get a strategic yes and a practical no. A successful PoC needs to satisfy both perspectives.

2. Define Goals, Milestones, and Success Criteria

A PoC without clearly defined goals quickly becomes a subjective exercise. One person likes the solution. Another finds it unfamiliar. A third person fails to log in on the first day and concludes that everything is broken. At that point, you have not really tested anything. You have simply collected random reactions.

Before the test begins, both the customer and the vendor should agree on what is actually being measured. Is the goal a better user experience, easier administration, improved stability, stronger security, reduced support requirements, or faster deployment? The clearer the criteria are, the easier it becomes to evaluate the outcome later.

B2B Buying Journeys Are Rarely Linear

Gartner describes modern B2B purchasing as a non-linear process where buyers move between understanding problems, exploring solutions, building requirements, and selecting vendors. Uncertainty, internal processes, and multiple stakeholders make the journey more complex. A PoC can serve as a common reference point, as long as it has clear goals and a defined path forward.

3. Build a Test Structure That Reflects Reality

A PoC should not be designed to make a product look as good as possible. It should be designed to determine whether the solution works in the customer’s actual environment. That means including realistic use cases, relevant user groups, and clearly defined scenarios.

A good testing structure should show what will be tested, who is responsible, how feedback will be collected, and which criteria will determine whether the test is successful. At that point, the PoC becomes more than a demonstration. It becomes a decision-making tool.

4. Align Expectations Before the Test Starts

One of the most common mistakes is treating a PoC as an isolated project. It rarely is. For the customer, the process may be connected to security reviews, budget approvals, internal training, IT architecture, existing agreements, or even internal political considerations.

This is why it is important to discuss what happens if the test succeeds:

  • Who makes the final decision?
  • When can implementation begin?
  • Which resources need to be available?
  • Are there internal processes that could delay or stop progress?

5. Follow Up During the Process, Not Just Afterward

A PoC should not be something a vendor starts and then simply hopes will work. Regular communication throughout the process is essential, not to pressure the customer, but to catch small issues before they become larger frustrations.

Feedback during the process is often more valuable than the final report. This is where you discover where users struggle, what they understand, what they misunderstand, and which needs were not clearly identified during the sales process.

Customer Insight Is Strategic

McKinsey highlights that customer insights help organizations understand changing needs, market demand, and how products and services are experienced. In a PoC, these insights come directly from the customer’s real-world usage. This makes the testing process valuable not only for sales and implementation, but also for future product development.

Common Mistakes That Ruin a PoC

A PoC rarely fails because the technology itself is poor. More often, it fails because the framework around the process is weak. These are some of the most common issues I have seen:

  • Unclear goals: Nobody really knows what needs to be proven.
  • Wrong participants: The people testing the solution are not the people who will actually use it or make the final decision.
  • No pricing clarity: The customer likes the solution but experiences sticker shock later.
  • No plan for what comes next: The test succeeds, but the process stops because nobody knows what happens afterward.
  • Testing too many things at once: Everything gets tested simultaneously and very little is learned about what truly matters.

What Happens After a Successful PoC?

If a PoC meets its defined success criteria, the next step should already be clear. At that point, it is no longer about starting a new discussion from scratch, but about moving forward with implementation, clarification, and practical execution.

This is where many organizations lose momentum. They celebrate a successful test while forgetting that the customer may still be waiting for internal resources, budget approval, security validation, or a deployment plan. A successful PoC should not end with “the test worked.” It should end with a clear understanding of what happens next.

A PoC Also Tests the Relationship

For me, this is perhaps the most important point. A PoC does not only test the product. It also tests the relationship. Customers get to see how the vendor follows up, handles challenges, and listens to feedback. At the same time, the vendor gets to see how the customer prioritizes, communicates, and involves their own people.

It is similar to taking a car for a test drive. You are not simply testing whether the engine starts. You are trying to determine whether it fits your needs, whether you trust it, and whether you can genuinely see yourself using it in everyday life.

What Is a PoC (Proof of Concept)
Just as a car buyer would take a car for a test drive before making a purchase, customers should have the opportunity to test a solution on a smaller scale before making a larger investment. The difference is that a good PoC also tests collaboration, expectations, and the ability to execute successfully.

Why Do So Few Digital Services Let You Test What You Are Actually Buying?

Many apps and digital services do offer a free version, but it is often little more than a limited sample. The features that actually determine whether a solution fits your needs are frequently hidden behind a paywall or subscription model.

I have personally experienced paying for a full version only to discover that the experience was not what I had expected. You are left with the feeling that you paid for something you never really had the chance to properly evaluate in the first place.

It is interesting when you think about it. We test-drive cars before buying them, try on clothes before going to the checkout, and often sample food before ordering more. Yet we are frequently expected to subscribe to digital services without experiencing the features that actually separate the free version from the product we are paying for.

I believe more providers could improve customer satisfaction by thinking more like a good PoC, giving customers a realistic opportunity to understand what they are actually buying.


Sources

  • Salesforce, State of the AI Connected Customer, 7th edition.
  • Gartner, B2B Buying Journey.
  • McKinsey, Customer Insights.

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