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From customer validation to scalable growth

Masterclasses with the GRITD method

As an impact entrepreneur, you’ll face different challenges at every stage of your business. In the early stages, it’s often about finding the right customer and validating your solution. As your business grows, the focus shifts to product-market fit, commercial traction and scalability.

That is why ImpactCity is collaborating with GRITD, a specialist in start-up and scale-up development. Together, we offer two practical masterclasses designed to help entrepreneurs make better decisions based on customer insights, validation and data.

The training courses form part of ImpactCity’s range of services for impact entrepreneurs in The Hague and are tailored to the various stages of a business’s life cycle.

Masterclass 1: Customer validation – from assumptions to insights

Date: 25 November 2026

Have you developed an innovative product or service and are you working with a prototype or MVP? If so, the next step is often to validate your market. Who is your ideal customer? What is the most pressing problem for that customer? And does your solution actually address that problem?

During this interactive masterclass, you will use GRITD’s StartupFramework© to identify and test the key assumptions about your customers, the problem and the solution. You will learn how to design targeted validation experiments and conduct valuable customer interviews that will help you further refine your product, positioning and market approach.

What are the benefits?

  • Understanding your key assumptions
  • A clear picture of your ideal customer
  • Specific validation experiments
  • Ways to improve market access
  • A stronger problem-solution fit
Who is it for?

Founders of start-ups with an innovative product or service and a prototype or MVP, who wish to further validate their target audience and market and seek guidance on their positioning and market approach.

Masterclass 2: Validation and metrics for scalable growth
Date: 1 December 2026

Do you already have customers and demonstrable traction, but want to know whether you have sufficient product-market fit to continue growing? If so, this masterclass will help you identify the right insights and metrics.

Using GRITD’s StartupFramework©, you can identify which indicators show that your solution is genuinely aligned with the market. You’ll pinpoint where uncertainties still lie and determine which metrics and experiments are needed to underpin further growth.

What are the benefits?
  • A better understanding of your product-market fit
  • Clear growth metrics and success criteria
  • Better justification for scaling up
  • Refining your go-to-market strategy
  • Practical guidance for further growth
Who is it for?

Businesses with a clear target audience, customers and demonstrable traction, which wish to strengthen their product-market fit and make their growth more predictable.

Apply here

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