What Is Scrum?
Scrum is an iterative, ritualized, process-driven agile software product development framework created by Ken Schwaber and Jeff Sutherland. Their official guide can be found at http://www.scrumguides.org/. Scrum organizes software product development around three foundational pillars; artifacts, roles, and meetings, that control the flow of work through the Scrum framework.
The Scrum artifacts are the product backlog, the sprint backlog, and the product/software increment. The product backlog is composed of prioritized product backlog items (epics, user stories, and bugs). The sprint backlog is composed of...