What is Scrum?
1- Scrum is a rugby football term.
Scrum is a team of eight individuals in rugby. Everyone in the pack acts together with everyone else to move the ball down the field in small incremental steps. Teams work as tight, integrated units with whole team focusing on a single goal.
2- Scrum is an iterative, incremental process for developing any product or managing any work. It produces a potentially shippable set of functionality at the end of every iteration.