https://www.3m.co.uk/3M/en_GB/post-it-notes/ideas/articles/make-the-leap-from-to-do-to-done-with-the-scrum-methodology/
"The Scrum method" described here, similar to the Kanban method, the Memindex method, tickler systems, or other card index as productivity systems, seems to be a productized name for selling Post-it Notes.
Scrum method consists of a project broken down into "story" rows with "to do" items in columns which progress along to "in process", "to verify", and finally "done".
Other productized names (particular to the note taking space): Antinet zettelkasten, Linking Your Thinking, Second Brain, etc.