SCRUM methodology is one popular project or program management methodologies. The Scrum methodology is iterate (the product is produced during the small cycles called iterations), incremental (the functionality of the product increase during each iteration by adding new properties) and use its own terminology for working people and some procedural steps. The Scrum methodology have many elements but none of them is random and unnecessary .There is a project team consisted of the owner of the product , Scrum Master and Scrum team. Each one have different task to perform.

The entire process is also divided. There are following phases: pregame, game and postgame that are further consisted of some steps to do. As we can see the structure of the Scrum methodology is very complex but not complicated! It is designed to help client but from people who work at this methodology requires many skills and character traits. Scrum is a process template commonly used to oversee projects, and manage complex work. Typically it is complemented by agile software development, encouraging teamwork and self-organization. The name itself is influenced by "scrums" in terms of the game of rugby. The name reflects the nature of what is achieved through the method, in terms of group members all successively striving towards better work efficiency.

Reference:

http://www.scrummethodology.org/