There are many books and trainings that describe what good Product Owner should be. I have been a Product Owner for more than 5 years now. During this time I learned that there is only one skill that is essential to good Product Owner. I am ready to share it with you together with few "stories from the trenches" that will illustrate it. My presentation for Agile Tour Vilnius 2014 conference: www.agileturas.lt Vaidas Adomauskas