Welcome to the official Scrum Mastery Cheat Sheet by OPEX Institute
Scrum Mastery Cheat Sheet
1. The 3-5-3 Structure
| 3 Accountabilities (Roles) | 5 Events | 3 Artifacts |
|---|---|---|
| Scrum Master: True Leader / Coach | The Sprint: The Container | Product Backlog: (Product Goal) |
| Product Owner: Value Maximizer | Sprint Planning: Why/What/How | Sprint Backlog: (Sprint Goal) |
| Developers: Quality & Increment | Daily Scrum: Plan 24 Hours | Increment: (Def. of Done) |
| Sprint Review: Inspect Outcome | ||
| Sprint Retrospective: Inspect Process |
2. Core Responsibilities
Scrum Master
- Establishes Scrum as defined in the Guide.
- Accountable for the Scrum Team's effectiveness.
- Removes impediments and coaches the organization.
Product Owner
- Accountable for maximizing product value.
- Solely responsible for Backlog management.
- Must be one person, not a committee.
Developers
- Committed to creating any aspect of a usable Increment.
- Hold each other accountable as professionals.
- Always own the Sprint Backlog and Plan.
3. Time-Box Limits (Max)
| Event | Time-Box (1 Month Sprint) | Purpose |
|---|---|---|
| Sprint Planning | 8 Hours | Define Why, What, and How. |
| Daily Scrum | 15 Minutes | Inspect progress toward Sprint Goal. |
| Sprint Review | 4 Hours | Inspect Increment & adapt Backlog. |
| Sprint Retrospective | 3 Hours | Plan quality/effectiveness improvements. |
4. PSM / PSPO Essentials
| Question | The Exam Answer |
|---|---|
| Who can cancel a Sprint? | Only the Product Owner if the Goal becomes obsolete. |
| Who decides how work is done? | The Developers (they are self-managing). |
| When is a Sprint over? | When the Time-box expires (it never ends early). |