Phillip Starke
The sprint retrospective – why is it needed and what are best practices?

Along with the refinement, I find the sprint retrospective to be the most important ceremony within the Scrum Framework. It embodies one of the main features of agile product development, iterative improvements. This is, in my view, at the heart of agile product development. Iteratively improving not only applies to the product itself but also to the developmental process, the method of collaboration, and used frameworks.