This document discusses business model innovation and customer discovery. It emphasizes the importance of understanding customer needs and testing business model assumptions. New tools, skills, and mindsets are needed to design better business models in a changing technological world. The business model canvas is presented as a tool to clarify key elements of a business model including customer segments, value propositions, channels, and revenue streams. The document stresses getting out of the building to watch customers, look for needs instead of solutions, and pivot the business model based on learning through customer interactions and testing assumptions.