.

Also question is, where did scrum come from?

The term 'Scrum' was first used by Hirotaka Takeuchi and Ikujiro Nonaka in their ground-breaking 1986 paper, "The New New Product Development Game." They borrowed the name from the game of rugby to stress the importance of working as a team in complex product development.

Similarly, is Scrum a methodology? Scrum is an agile way to manage a project, usually software development. Agile software development with Scrum is often perceived as a methodology; but rather than viewing Scrum as methodology, think of it as a framework for managing a process.

Furthermore, what is the difference between agile and scrum?

Agile is a continuous iteration of development and testing in the software development process whereas Scrum is an Agile process to focus on delivering the business value in the shortest time. Agile methodology delivers the software on a regular basis for feedback while Scrum delivers the software after each sprint.

Does PSM certification expire?

CSM credential is valid for two years only. You have to renew this certification every two years by paying $100 for every two years. There is no need to renew PSM certification once you have passed the certification exam. The PSM certification is valid for the life without the need of any renewal.