In the beginning, the Scaled Agile Framework (SAFe) advocated using Scrum at the team level. As the framework grew in popularity, practitioners started to ask if teams must use Scrum or if team-level kanban was an acceptable alternative. I recall discussions about Scrumban as an approach, and I remember it being dismissed, but I don't recall why. Anyway, the result was that the framework was updated so teams could use either Scrum or Kanban in SAFe. 

On the surface, this seemed like a simple so...