Scrum is a combination of 3-3-5-5. The core concepts of the Scrum framework can be simply remembered as 3.3.5.5, as shown below:
3 Roles
- Product Owner
- Development Team
- Scrum Master
3 Artifacts
- Product Backlog
- Sprint Backlog – Sprint To-Do List
- Product Increment – Potentially Shippable Product Increment
5 Events
5 Values
- Openness
- Respect
- Courage
- Focused
- Commitment
The 3355 framework is grounded in the three pillars of Scrum:
- Transparency
- Inspection
- Adaptation
The Definition of Done (DoD) is achieved through the 5 events of the Scrum team, aligning with the 3 pillars.

3355 Scrum Framework











