Whether you work at a large company or a startup, one huge key to success is that you must talk to your customers. Without talking to users you risk the expensive mistake of creating something they don't want. Data and analytics can only tell you the "what". But research and talking to people allows you to dig deep and understand the "why" behind their behavior. In the pages that follow you will find sample questions to help you start doing your own customer development and user research interviews. Enjoy!