Neural Project Institute · Free guide
The Scrum Guide: Learn Scrum Step by Step
This Scrum guide explains how Scrum works in plain English: a small team delivers value in short, fixed-length Sprints, inspecting the result and adapting its plan as it goes. Start with the summary below, follow the reading path for your role, then go deeper with 35 practical guides to the Scrum Team, events, artifacts, estimation and scaling.
Key takeaways
- Scrum is a lightweight framework for complex work, built on empiricism: transparency, inspection and adaptation.
- It has three accountabilities (Product Owner, Scrum Master, Developers), five events and three artifacts, each with a commitment.
- The official rules are in the Scrum Guide by Ken Schwaber and Jeff Sutherland; the current version dates from November 2020.
- Story points, velocity, user stories and burndown charts are popular complementary practices, not part of the Scrum Guide itself.
- Use the reading paths below to learn Scrum in a sensible order for your role.
What is Scrum?
Scrum is a lightweight framework that helps people, teams and organisations generate value through adaptive solutions for complex problems, as the official Scrum Guide puts it. A small, cross-functional Scrum Team works in Sprints of one month or less, produces a usable Increment each Sprint and uses regular events to inspect progress and adapt the plan.
Scrum was created by Ken Schwaber and Jeff Sutherland, who first presented it publicly in 1995. They published the first Scrum Guide in 2010 and have revised it several times since; the current version is the 2020 Scrum Guide. That revision made Scrum less software-specific and less prescriptive: it replaced "roles" with accountabilities, merged the Development Team into a single Scrum Team with Developers, and added the Product Goal and the idea of a commitment for each artifact.
In June 2025, Ralph Jocham, John Coleman and Jeff Sutherland published the Scrum Guide Expansion Pack, which adds context, theory and examples around the framework. It is a supplement, not a replacement: the 2020 Scrum Guide remains the definition of Scrum.
This hub is our own, independent guide. Where we describe a rule of Scrum, we follow the 2020 Scrum Guide; where we recommend a practice or format, we say it is our advice or common practice.
Scrum at a glance: the 3-5-3 structure
People often summarise Scrum as 3-5-3: three accountabilities, five events and three artifacts. The table pulls the essentials from the Scrum Guide into one place. Time-boxes are the maximum for a one-month Sprint and are usually shorter for shorter Sprints.
| Element | What it is | Key rule |
|---|---|---|
| Product Owner | Accountable for maximising the value of the product and for the Product Backlog | One person, not a committee |
| Scrum Master | Accountable for the Scrum Team's effectiveness and for establishing Scrum | Serves the team, the Product Owner and the organisation |
| Developers | The people who create a usable Increment each Sprint | Own the Sprint Backlog and the plan for the Sprint |
| The Sprint | The container for all other events | Fixed length of one month or less |
| Sprint Planning | Sets why the Sprint is valuable, what can be done and how | Up to 8 hours |
| Daily Scrum | Developers inspect progress toward the Sprint Goal and adapt | 15 minutes, every working day |
| Sprint Review | Inspects the outcome with stakeholders and adapts the Product Backlog | Up to 4 hours |
| Sprint Retrospective | Plans ways to improve quality and effectiveness | Up to 3 hours |
| Product Backlog | Ordered list of what is needed to improve the product | Commitment: Product Goal |
| Sprint Backlog | Sprint Goal, selected items and the plan to deliver them | Commitment: Sprint Goal |
| Increment | A usable step toward the Product Goal | Commitment: Definition of Done |
The Scrum Team is typically 10 or fewer people, with no sub-teams or hierarchies. Underneath the structure sit the three pillars of empiricism (transparency, inspection and adaptation) and five values (commitment, focus, openness, respect and courage).
How Scrum works: one Sprint step by step
Every Sprint follows the same rhythm. Here is what happens from start to finish.
- The Product Owner keeps the Product Backlog ordered toward a clear Product Goal, and the team refines upcoming items so they are small and clear enough to select.
- Sprint Planning starts the Sprint. The team agrees a Sprint Goal, selects Product Backlog items and plans how to deliver them, creating the Sprint Backlog. See Sprint Planning.
- The Developers work toward the Sprint Goal, meeting for the Daily Scrum to inspect progress and adjust the plan.
- Work that meets the Definition of Done becomes part of the Increment. The team can release it to users whenever it is ready, even before the Sprint ends.
- The Sprint Review shows stakeholders what was achieved and gathers feedback, which updates the Product Backlog.
- The Sprint Retrospective closes the Sprint. The team decides on the most helpful improvements to how it works.
- The next Sprint starts immediately, with the improved backlog and ways of working.
Official Scrum vs common Scrum practices
The Scrum Guide is deliberately short. It defines what Scrum requires and leaves teams to choose their own practices. Many things people associate with Scrum come from those choices, which is why different Scrum teams can look quite different.
| Defined in the Scrum Guide | Common complementary practices |
|---|---|
| Product Owner, Scrum Master and Developers | Job titles such as "Scrum Master" as a full-time role, Agile coach |
| The Sprint and its four events | The term "Scrum ceremonies", Sprint 0, hardening Sprints |
| Product Backlog, Sprint Backlog and Increment | User stories, epics, story mapping |
| Product Goal, Sprint Goal and Definition of Done | Definition of Ready, acceptance criteria templates |
| Refinement as an ongoing activity | A regular backlog refinement meeting |
| Monitoring progress toward goals | Story points, velocity, burndown and burnup charts, planning poker |
| Transparency of the artifacts | Physical or digital Scrum boards and software tools |
Complementary practices are not wrong; many are very useful. The point is to treat them as choices you can change when they stop helping, rather than as rules. Our guide to Scrum techniques covers the most useful ones.
Where to start: Scrum reading paths
You do not need to read all 35 guides. Pick the path that matches your role and read in order.
New to Scrum
- What is Scrum?
- Scrum principles and values
- Scrum team roles
- The 5 Scrum events
- Scrum artifacts
- Scrum glossary for any term you meet
Scrum Masters
Start with how to become a Scrum Master and servant leadership in Scrum, then learn to facilitate each event well, beginning with the Sprint Retrospective and retrospective games.
Product Owners
Developers
Focus on the Sprint Backlog, the Increment, story points and technical debt.
Managers and project managers
All 35 Scrum guides by topic
Every guide in our Scrum library, grouped into five chapters: Scrum basics, the Scrum Team, Scrum events, artifacts and practices, and scaling and learning.
Scrum basics
What Scrum is, its values and pillars, the Scrum process and how it compares with other approaches.
- What Is Scrum? The Scrum Framework ExplainedWhat Scrum is, how the framework works, its accountabilities, events and artifacts, where it came from, and when to use it.
- Scrum Principles and Values: Pillars of Empiricism ExplainedThe three pillars of Scrum (transparency, inspection, adaptation) and its five values (commitment, focus, openness, respect, courage), with examples.
- Empiricism in Scrum: Inspect and Adapt ExplainedWhat empiricism means in Scrum, why complex work needs it, how each Scrum event provides an inspect-and-adapt opportunity, and common pitfalls.
- Advantages of Scrum: Benefits and LimitationsThe main advantages of the Scrum framework for teams, customers and organisations, the limitations to be aware of, and when Scrum fits best.
- The Scrum Process: Phases and the Sprint Cycle Step by StepThe Scrum process step by step: from product vision and backlog through the Sprint cycle of planning, daily work, review and retrospective.
- Scrum vs Waterfall: Key Differences ExplainedScrum vs Waterfall compared: planning, delivery, roles, change, risk and documentation, with guidance on when to use each or a hybrid.
- Scrum vs Lean: Differences, Similarities and Using BothHow Scrum and Lean compare: origins, focus, structure, roles and metrics, what they share, and how teams combine Scrum with Lean thinking.
The Scrum Team
The three accountabilities and the skills and leadership style that make Scrum work.
- Scrum Team Roles: Product Owner, Scrum Master and DevelopersThe three Scrum accountabilities explained: what the Product Owner, Scrum Master and Developers each do, team size, and common role mistakes.
- What Is a Product Owner in Scrum? Role and Must-Have SkillsThe Scrum Product Owner explained: accountabilities, daily activities, must-have skills, how the role differs from a product manager, and common pitfalls.
- How to Become a Scrum Master: Skills, Steps and CertificationHow to become a Scrum Master: the most useful Scrum Master skills, practical experience to gain, certification options, and how to land your first role.
- Servant Leadership in Scrum: What It Means in PracticeWhat servant leadership means in Scrum, its origins, how Scrum Masters and managers practise it, and the difference between serving and pleasing.
Scrum events
The Sprint and the four events inside it, with agendas, time-boxes and tips.
- Scrum Ceremonies: The 5 Scrum Events ExplainedThe five Scrum events (Sprint, Sprint Planning, Daily Scrum, Sprint Review, Retrospective): purpose, attendees, time-boxes and how they fit together.
- The Scrum Sprint Cycle: Length, Time-box and RulesHow the Scrum Sprint cycle works: choosing a Sprint length, what happens each day, rules for changing scope, cancelling a Sprint, and tips.
- Sprint Planning in Scrum: Agenda, Time-box and TipsHow to run Sprint Planning in Scrum: the three topics (why, what, how), inputs and outputs, time-box, a sample agenda and common mistakes.
- Daily Scrum (Stand-Up): Purpose, Format and TipsHow to run an effective Daily Scrum: its purpose, 15-minute time-box, who attends, useful formats, and how to avoid turning it into a status report.
- Sprint Review: Goal, Agenda and ChecklistHow to run a Sprint Review in Scrum: its purpose, who attends, the time-box, a sample agenda, a preparation checklist and mistakes to avoid.
- Sprint Retrospective: Goal, Format and Facilitation TipsHow to run a Sprint Retrospective: its goal, time-box, a five-step structure, facilitation tips, and how to make sure improvements actually happen.
- Sprint Retrospective Games: 10 Formats That WorkTen proven Sprint Retrospective games and formats, including Start Stop Continue, Sailboat, 4Ls, Starfish and Timeline, with when to use each.
- Sprint Review vs Sprint Retrospective: What's the Difference?Sprint Review vs Retrospective compared: purpose, focus, attendees, outputs and order, so each Scrum event does its own job.
Artifacts and practices
Backlogs, increments, estimation, metrics, boards and the tools Scrum teams use.
- Scrum Artifacts: Product Backlog, Sprint Backlog and IncrementThe three Scrum artifacts and their commitments (Product Goal, Sprint Goal, Definition of Done), what each contains, who owns it and how to keep it transparent.
- What Is a Sprint Backlog? Contents, Ownership and ExamplesWhat the Sprint Backlog is in Scrum, its three parts, who owns and updates it, how it differs from the Product Backlog, and an example.
- What Is an Increment in Scrum? Definition and ExamplesWhat an Increment is in Scrum, how it relates to the Definition of Done, whether you can release several per Sprint, and examples across industries.
- Story Points in Scrum: What They Are and How to EstimateStory points in Scrum explained: what they measure, how to estimate with reference stories and planning poker, points vs hours, examples and mistakes.
- Velocity in Scrum: How to Calculate and Use ItHow to calculate velocity in Scrum, use it for Sprint Planning and release forecasts, its benefits and limits, and why it should never be a target.
- Scrum Metrics and KPIs: What to TrackThe Scrum metrics and KPIs worth tracking: Sprint Goal success, velocity, burndown, cycle time, escaped defects, value and team health, plus pitfalls.
- Scrum Boards: How to Set Up and Use OneHow a Scrum board works, typical columns, what goes on a Scrum card, physical vs digital boards, and the differences from a Kanban board.
- Technical Debt in Scrum: How to Spot and Manage ItWhat technical debt is, how it builds up in Scrum teams, how to make it visible in the Product Backlog, and practical strategies to pay it down.
- Scrum Techniques: Practices That Complement the FrameworkUseful techniques Scrum teams add to the framework: user stories, story mapping, planning poker, burndowns, refinement, pairing and retrospective formats.
- Scrum Software Tools: What to Look ForHow to choose Scrum software: must-have features for backlogs, sprints, boards and reports, commonly used tools, and tips for adopting one.
- Product Backlog in Scrum: What It Is and How to Manage ItWhat the Product Backlog is in Scrum, who owns it, how to order and refine it, the Product Goal, a worked example, and common mistakes to avoid.
- Backlog Refinement in Scrum: How to Run It WellWhat backlog refinement is in Scrum, who takes part, how much time to spend, a step-by-step process, an example session, and tips for doing it well.
Scaling and learning
Scaling Scrum across teams, training and certification, and a Scrum glossary.
- Scrum of Scrums: How to Coordinate Multiple Scrum TeamsWhat a Scrum of Scrums is, who attends, how often it meets, a sample agenda, common pitfalls, and how it fits with Scrum@Scale, LeSS and SAFe.
- What Is Scrum@Scale? Structure, Roles and CyclesScrum@Scale explained: Jeff Sutherland's scale-free framework, Scrum of Scrums, Executive Action Team, MetaScrum, the two cycles, and how it compares.
- Scrum Certification and Training: Options ComparedCompare Scrum certifications (PSM, CSM, PSPO, CSPO, SAFe Scrum Master) and training options, and choose the right path for your role and goals.
- Scrum Glossary: 70+ Scrum Terms Defined in Plain EnglishA Scrum glossary of 70+ terms: accountabilities, events, artifacts, commitments and common practices, each defined in plain English with links.
Scrum compared with Agile, Kanban and Waterfall
| Comparison | The short answer | Read more |
|---|---|---|
| Scrum vs Agile | Agile is a set of values and principles; Scrum is one framework for putting them into practice | Agile vs Scrum |
| Scrum vs Kanban | Scrum works in fixed Sprints with defined accountabilities; Kanban manages continuous flow with WIP limits | Kanban vs Scrum |
| Scrum vs Waterfall | Scrum plans and delivers in short cycles; Waterfall plans the whole project up front and delivers in sequence | Scrum vs Waterfall |
| Scrum vs Lean | Lean focuses on flow and removing waste; Scrum adds a team structure and cadence | Scrum vs Lean |
Many teams combine approaches, for example Scrum with Kanban-style WIP limits, or Scrum teams delivering inside a wider predictive programme. The Scrum Guide allows this as long as the Scrum framework itself is kept intact.
Scrum templates and tools
You can run Scrum with a whiteboard and sticky notes, but templates and software help once the team is distributed or the backlog grows.
- Sprint planning template to record the Sprint Goal, selected items and capacity.
- Product backlog template to order and refine backlog items.
- User story template for writing items with acceptance criteria.
- Sprint retrospective template to capture improvements and follow them up.
For software, Jira is the specialist choice for software teams running Scrum, with backlogs, Sprints and Agile reports. Teams mixing Scrum with Gantt-based planning or work from other departments often prefer an all-in-one platform such as Wrike, which ranks first in our project management tools ranking.
Common mistakes when adopting Scrum
- Renaming old roles and meetings without changing how decisions are made, for example a project manager assigning tasks under the title of Scrum Master.
- No clear Sprint Goal, so the Sprint becomes a list of unrelated tasks and the Daily Scrum turns into a status report.
- A weak or missing Definition of Done, which leaves "almost finished" work piling up and makes the Increment unusable.
- A Product Owner without authority to order the backlog, or a committee acting as Product Owner.
- Treating velocity as a target or comparing it between teams, which encourages inflated estimates.
- Skipping the Retrospective when the team is busy, which removes the event that makes every other improvement possible.
More guides
Frequently asked questions
What is the Scrum Guide?
The Scrum Guide is the official, freely available definition of Scrum, written by Scrum's creators Ken Schwaber and Jeff Sutherland. It sets out Scrum theory, values, the Scrum Team, events, artifacts and commitments. This hub is our independent, practical companion to it.
What is the latest version of the Scrum Guide?
The current official version is the November 2020 Scrum Guide. The Scrum Guide Expansion Pack, published in June 2025 by Ralph Jocham, John Coleman and Jeff Sutherland, adds context and examples but does not replace it.
What is the 3-5-3 rule in Scrum?
It is shorthand for Scrum's structure: three accountabilities (Product Owner, Scrum Master, Developers), five events (the Sprint, Sprint Planning, Daily Scrum, Sprint Review and Sprint Retrospective) and three artifacts (Product Backlog, Sprint Backlog and Increment).
What are the 3 roles in Scrum?
The 2020 Scrum Guide calls them accountabilities: the Product Owner, the Scrum Master and the Developers. Together they form one Scrum Team with no sub-teams or hierarchies. See Scrum team roles.
What are the 5 Scrum events?
The Sprint, Sprint Planning, the Daily Scrum, the Sprint Review and the Sprint Retrospective. The Sprint contains the other four. See Scrum ceremonies.
What are the 3 Scrum artifacts?
The Product Backlog, the Sprint Backlog and the Increment. Each has a commitment: the Product Goal, the Sprint Goal and the Definition of Done. See Scrum artifacts.
What are the pillars and values of Scrum?
The three pillars are transparency, inspection and adaptation. The five values are commitment, focus, openness, respect and courage.
How long is a Sprint in Scrum?
One month or less, and the same length each time. Many teams choose one or two weeks. Shorter Sprints mean more frequent feedback and less risk per Sprint.
How big should a Scrum Team be?
The Scrum Guide says a Scrum Team is typically 10 or fewer people: small enough to stay nimble, large enough to complete significant work within a Sprint.
Is Scrum the same as Agile?
No. Agile is a mindset described by the Agile Manifesto's values and principles. Scrum is one specific framework for working in an Agile way. See Agile vs Scrum.
Can Scrum be used outside software development?
Yes. The 2020 Scrum Guide was written to be less software-specific, and teams use Scrum for marketing, product, research, operations and other complex work where requirements change.
How do I learn Scrum and get certified?
Read the Scrum Guide and our beginner reading path above, practise on a real team, then consider a certification such as PSM or CSM for Scrum Masters, or PSPO or CSPO for Product Owners. See Scrum certification and training.