"Who is it for" can be answered through needs-based segmentation, i.e. exactly what you said. Who is it for? It's for people who need x,y,z. You still need to h

"Who is it for" can be answered through needs-based segmentation, i.e. exactly what you said. Who is it for? It's for people who need x,y,z. You still need to have a clear definition of that if you want to e.g. evaluate market size, or do any sort of marketing/sales afterwards.