International Scrum Master Foundation

3.2 Basic Scrum Rules

Here is a list of basic rules in scrum:

1. Every sprint is four weeks or less in duration.
2. There are no breaks between sprints.
3. Every sprint is the same length.
4. The intention of every sprint is to create “potentially shippable” software.
5. Every sprint includes sprint planning.
6. The sprint planning meeting is time boxed to 2 hours in a 1-weeks sprint, and 4 hours if two weeks sprint and so on.
7. The daily scrum takes place every day at the same time of day.
8. The daily scrum is time boxed to 15 minutes.
9. Every sprint includes sprint review for stakeholder feedback on the product.
10. Every sprint includes sprint retrospective for the team to inspect and adapt.
11. Review and retrospective meetings are time boxed in total to 2 hours in a 1-weeks sprint, and 4 hours if two weeks sprint and so on.
12. There is no break between sprint review and retrospective meetings.