Product-Market Fit
The point at which a product satisfies a strong market demand, meaning real users genuinely need and actively use what you have built.
Product-market fit is the moment when your product clicks with its audience. Before product-market fit, you are pushing. You have to convince people to try your product, remind them to come back, and explain why they should care. After product-market fit, the dynamic flips. Users start coming to you, telling their friends, and asking for more features. Venture capitalist Marc Andreessen described it as the point where the market is pulling the product out of you.
Finding product-market fit is rarely a single eureka moment. It is usually the result of many iterations, failed experiments, and conversations with users. You might launch your MVP and discover that the problem you chose is real but your solution misses the mark. Or you might find that a different group of users loves your product for a reason you never expected. The path to product-market fit requires humility, curiosity, and a willingness to change course based on what the data tells you.
For high school students, product-market fit is the ultimate validation that you built something that matters. During Loona's Build program, every team works toward this goal. You start by identifying a real problem, build a solution, put it in front of real users, and iterate based on their feedback. Not every team achieves full product-market fit in 10 weeks, but the process of pursuing it teaches you more about building real things than any textbook ever could.