July 2011. I attended a very good course in Boston labelled : Professional Scrum Product Owner (PSPO).Very interesting sessions BTW. Scrum But During this course, Ken Schwaber, one of the founder behind Scrum, talked about the Scrum But concept: the way some teams partially adhere to the Scrum organization principles. “We use Scrum but…”. Scrum And? While discussing this concept with the participants (and Scrum.org folks), I...