The Business Analysis activity can be seen from many different perspectives, in all available sets of IT methodologies and frameworks created so far. This perspective, of Innovation and Creativity is not a standard one; you can find it mostly in UI design or UX design; you can find it in internal architecture of the systems; and you can find it in sales.
Scrum is an Agile framework, for fast delivery, while reducing defects and errors. Lean is the foundation for Agile. Scrum is basically a set of rules and roles (and this is the reason why I consider that the beginners could easily creep into Waterfall world), Lean is a set of principles and concepts.
Keep up to date