I ask everybody what they use the product for, and I’m trying to see, really, who has the most passion around the product. And usually it breaks down by use cases, sometimes by user types. It’s really just looking through the initial data to really understand who really needs this product, and it can be on demographics, it can be on use cases, it can be on a lot of different things. But once you really understand a group that really needs the product, then you start to have that true North for the business — the part that you can actually start to build a business that will grow and thrive around if they represent a big enough market.
via How to bring a product to market / A very rare interview with Sean Ellis – Venture Hacks.