This document summarizes a customer discovery workshop focused on developing and testing hypotheses for new products and services. The workshop covered topics such as conducting customer interviews and focus groups, developing minimum viable products, prioritizing critical hypotheses, designing hypothesis test cards, and planning experiments. Participants worked in groups to extract and refine hypotheses, develop MVPs, design test cards for important hypotheses, and track planned experiments and activities over the coming months. The goal was to help entrepreneurs learn quickly by getting feedback through the build-measure-learn process with minimal effort.