For Hung’s question : Scrum is a PROJECT DELIVERY FRAMEWORK based on Agile Manifesto .

SCRUM are  Iterative and Incremental and

SCRUM’Artefacts includes:

  • Product backlog
  • product backlog burndown
  • Sprint backlog
  • Sprint backlog burndown
  • Empediment List

SCRUM’s Role includes

  • Product owner
  • Scrum master
  • team member
  • Stakesholders
  • Users