In this conversation, Dave Masters, Director of Product at Realtor.com, shares his insights on testing and experimentation in big companies. 

He discusses the need for testing and how to break out of the feature factory mindset. Dave shares a case study on how they tested a new product idea using customer interviews and concierge testing. 

He also talks about the value of using customer quotes in experiments and the differences between concierge and Wizard of Oz experiments. Dave provides tips for product managers in big companies who want to champion experimentation and shares his contact information for further discussion.