Product Managers are always asked upon to justify their product decisions, why invest company resources in a roadmap. In order to back your decisions, you need to be able to prove that it is indeed what the market is asking for, and you are addressing a need. As a product manager myself, I have continually started to rely on a framework that I have become to grow fonder of, and that is Experiment-Driven Product Development, or XDPD for short.