Product-market fit is a measure of how a product or a service satisfies market (customers) demands. It is organized into two categories, the left column identifies the customer's fields, and the right one represents the product fields.
On the customer side, customer jobs, problems, and needs as well as channels and user experience. The product side asks for alternatives (competition), key features of the product or service, and values for each channel & key metrics.
Sources indicate that it was created by a group of innovation practitioners from all around the world. Other sources suggest that it belongs to the Lean Startup / Lean Stack Customer Development Approach by Steve Blank: 2. Step Customer Validation.
