You're staring at your screen at 11 PM, trying to memorize the difference between the "3 C's," "4 C's," and "5 C's" of Scrum. Or maybe you're wondering if Scrum has 5 phases, 5 events, or 5 principles—and honestly, at this point, you're not even sure if they're the same thing.
Then there's the "3-5-3 rule." Wait, what?
If you've ever felt like Scrum is throwing numbers at you like a bingo caller on espresso, you're not alone. I've trained over 140,000 students, and the #1 frustration I hear is this: "Everyone explains Scrum differently, and I just want ONE clear explanation that makes sense."
That's exactly what you're about to get.
In this guide, you'll learn:
- What the Scrum framework actually is (in plain English)
- The 3-5-3 rule that makes everything click
- Why people confuse phases, events, principles, and values
- How all the pieces fit together (with visual diagrams)
- Common mistakes and how to avoid them
Just want the visuals? Jump to the complete framework diagram
What Actually IS the Scrum Framework? (Let's Start Simple)
Think of Scrum as a structured way to build complex products without losing your mind.
Here's what I mean: Imagine you're building a house, but the client keeps changing their mind about where the kitchen should go. Traditional project management would say, "Sorry, we planned everything upfront—the kitchen stays where it is." Scrum says, "No problem—let's build in small chunks, show you what we've got every two weeks, and adjust as we go."
The Scrum framework is an Agile methodology that helps teams work together to deliver valuable products through short cycles called Sprints. Instead of planning everything for 12 months and hoping you're right, you plan for 2-4 weeks, build something real, get feedback, and adapt.
But here's where it gets interesting (and where the confusion starts)...
The 3-5-3 Rule: Decoding Scrum's Magic Numbers
You know what nobody tells you when you start learning Scrum? That there's actually a simple pattern to all these numbers. I call it the 3-5-3 rule, and once you see it, everything clicks:
- 3 Roles (who does the work)
- 5 Events (how the work happens)
- 3 Artifacts (what the work produces)
That's it. That's the entire Scrum framework structure.
SCRUM FRAMEWORK
The 3-5-3 Rule
3 ROLES
(WHO)
- 👤 Product Owner→ Maximizes value
- 👤 Scrum Master→ Ensures Scrum works
- 👥 Developers→ Creates Increment
5 EVENTS
(HOW)
- 🔄 Sprint (1-4 weeks)→ Container event
- 📋 Sprint Planning→ What & How
- ☀️ Daily Scrum (15 min)→ Daily coordination
- 👁️ Sprint Review→ Inspect & adapt
- 🔍 Sprint Retrospective→ Improve process
3 ARTIFACTS
(WHAT)
- 📊 Product Backlog→ All potential work
- 📝 Sprint Backlog→ Work for this Sprint
- ✅ Product Increment→ Working product
Remember: 3-5-3 = Complete Scrum!
whatisscrum.org
Alt Text: "Visual diagram showing Scrum's 3-5-3 rule with 3 roles (Product Owner, Scrum Master, Developers), 5 events (Sprint, Sprint Planning, Daily Scrum, Sprint Review, Sprint Retrospective), and 3 artifacts (Product Backlog, Sprint Backlog, Product Increment)"
Let's break down each part so you never get confused again.
The 3 Scrum Roles: Who Does What?
1. Product Owner (The Visionary)
This person is like the ship's captain—they decide where we're going. They manage the Product Backlog and ensure the team is building the RIGHT thing, not just building things right.
Key responsibilities:
- Defines product vision and goals
- Prioritizes the Product Backlog
- Makes decisions about what gets built
- Communicates with stakeholders
2. Scrum Master (The Coach)
Think of them as the team's coach and obstacle-remover. They don't manage people; they manage the process. If something's blocking the team, the Scrum Master clears it.
Key responsibilities:
- Facilitates Scrum events
- Removes impediments
- Coaches the team on Scrum practices
- Shields the team from distractions
👉 Read more: How to Become a Scrum Master: Complete Career Guide
3. Developers (The Builders)
Everyone who builds the product—developers, testers, designers, writers. In Scrum, we call them all "Developers" because they're all developing the product together.
Key responsibilities:
- Create the Sprint plan
- Build the product increment
- Ensure quality
- Self-organize to get work done
Note: These are the ONLY three roles in Scrum. No "project managers," no "business analysts" as separate roles. Everyone fits into one of these three boxes.
The 5 Scrum Events: How Work Actually Happens
People often search for "What are the 5 phases of Scrum?" but here's the truth: Scrum doesn't have phases—it has events. Phases happen once and you move on. Events repeat every Sprint.
THE 5 SCRUM EVENTS (How Work Actually Happens)
SPRINT (1-4 Weeks)
SPRINT PLANNING
(8h max)
- What will we build?
- How will we do it?
DAILY SCRUM
(15 min)
BUILD INCREMENT
(Daily Dev Work)
SPRINT REVIEW
(4h max)
- Demo work
- Get feedback
- Adapt backlog
SPRINT RETROSPECTIVE
(3h max)
- What went well?
- What to improve?
- Actions
NEXT SPRINT BEGINS
Alt Text: "Flow diagram illustrating how the 5 Scrum events work together within a Sprint cycle, showing Sprint Planning leading to Daily Scrums, culminating in Sprint Review and Retrospective"
1. The Sprint (The Container Event)
Duration: 1-4 weeks (most teams use 2 weeks)
Everything happens inside a Sprint—a fixed time period where the team commits to delivering a potentially shippable product increment. Once a Sprint starts, its duration cannot be changed.
Think of it like: A marathon with a fixed finish line. You know exactly when it ends, which creates urgency and focus.
2. Sprint Planning
Duration: Maximum 8 hours for a 1-month Sprint (proportionally less for shorter Sprints)
"What are we going to build this Sprint, and how will we build it?" The team plans their work for the upcoming Sprint.
Two key questions answered:
- What can be delivered in this Sprint?
- How will the work be achieved?
3. Daily Scrum (Daily Stand-up)
Duration: 15 minutes, same time and place every day
A quick sync every morning where developers coordinate their work. Not a status report to the Scrum Master!
Three questions (classic format):
- What did I do yesterday?
- What am I doing today?
- What's blocking me?
Pro tip: Many modern teams skip these questions and just focus on "What do we need to do to meet our Sprint Goal?"
4. Sprint Review
Duration: Maximum 4 hours for a 1-month Sprint
End of the Sprint—time to show what you built to stakeholders and get feedback. This isn't a presentation; it's a working session.
What happens:
- Team demonstrates completed work
- Stakeholders provide feedback
- Product Owner discusses what's next
- Everyone collaborates on what to do in the next Sprint
5. Sprint Retrospective
Duration: Maximum 3 hours for a 1-month Sprint
The team asks: "How can we work better together?" This is where continuous improvement happens.
Key focus areas:
- What went well?
- What could be improved?
- What will we commit to changing?
"Before the Scrum Career Compass, I thought Sprint Retrospectives were just complaining sessions. Now I facilitate them in a way that actually creates change. My team's velocity increased 40% in three Sprints just by implementing what Dejan taught."
Think of these 5 events as a heartbeat—they repeat every Sprint, keeping the team synchronized and improving.
The 3 Scrum Artifacts: What Gets Produced
Artifacts are the tangible things Scrum produces. Each one has transparency and is open for inspection.
SCRUM ARTIFACTS & COMMITMENTS
📊 PRODUCT BACKLOG
Prioritized list of all potential work
COMMITMENT: 🎯 Product Goal
"Where the product is headed long-term"
OWNED BY: Product Owner📝 SPRINT BACKLOG
Selected items for this Sprint + Sprint plan
COMMITMENT: 🎯 Sprint Goal
"What we're achieving this Sprint"
OWNED BY: Developers✅ PRODUCT INCREMENT
Working product at Sprint end (potentially shippable)
COMMITMENT: 🎯 Definition of Done
"Shared understanding of quality standards"
OWNED BY: Scrum TeamAlt Text: "Diagram showing the 3 Scrum artifacts (Product Backlog, Sprint Backlog, Increment) with their corresponding commitments (Product Goal, Sprint Goal, Definition of Done) and ownership"
1. Product Backlog
A prioritized, ordered list of everything that might go into the product. It's never complete—it evolves as the product and market evolve.
Contains:
- Features
- Bug fixes
- Technical work
- Knowledge acquisition
Owned by: Product Owner
Commitment: Product Goal (where the product is headed)
2. Sprint Backlog
The specific items the team commits to completing in the current Sprint, plus their plan for delivering them.
Contains:
- Selected Product Backlog items
- The Sprint Goal
- The plan for delivering the increment
Owned by: Developers
Commitment: Sprint Goal (what we're trying to achieve this Sprint)
3. Product Increment
The actual working product at the end of each Sprint—something that could potentially be released to customers. It must meet the Definition of Done.
Key requirement: Must be in a usable condition, whether the Product Owner decides to release it or not.
Commitment: Definition of Done (shared understanding of quality)
The 3 Pillars of Scrum: The Foundation of Everything
Think of these as the foundation everything else is built on. This is empirical process control—the idea that knowledge comes from experience and making decisions based on what you observe.
1. Transparency
Everyone can see what's happening. No hidden agendas, no secret backlogs. The work, progress, and problems are visible to everyone.
2. Inspection
Regularly check the work and the process. Are we on track? Are we building the right thing? Are our processes working?
3. Adaptation
If inspection reveals problems, adapt quickly. Don't wait for a quarterly review. Adjust the process, the plan, or even the product.
These three pillars work together: Without transparency, you can't inspect properly. Without inspection, you won't know what needs adaptation. Without adaptation, you don't improve.
👉 Learn more: Understanding Empirical Process Control in Agile
The 5 Scrum Values: The Team's DNA
Now, if you want to talk about something with "5" that ACTUALLY matters, it's the Scrum Values. These aren't in the 3-5-3 framework, but they're the cultural foundation that makes everything else work.
- Commitment – The team commits to achieving Sprint Goals and supporting each other
- Courage – Team members have courage to do the right thing and tackle tough problems
- Focus – Everyone focuses on the Sprint work and team goals
- Openness – The team and stakeholders are open about work and challenges
- Respect – Team members respect each other as capable, independent people
Real talk: These aren't just feel-good words. In my 20+ years of IT leadership, I've seen teams with perfect Scrum mechanics fail because they ignored these values. And I've seen teams with imperfect processes succeed because they embodied them.
Wait, What About the 3 C's, 4 C's, and 5 C's?
Ah yes, the alphabet soup that breaks everyone's brain. Let me clear this up once and for all:
The 3 C's of Scrum (User Stories)
This is about writing good user stories using Ron Jeffries' framework:
- Card – Write the story on a card (or digital equivalent)
- Conversation – Discuss it with the team to understand requirements
- Confirmation – Define acceptance criteria (when it's "done")
Use case: When creating Product Backlog items
The 4 C's & 5 C's of Scrum (Unofficial)
Some people teach "Commitment, Courage, Communication, and Collaboration." Others add "Continuous Improvement." Honestly? This isn't official Scrum terminology. It's a mnemonic device some trainers use.
Here's my advice: Don't waste time memorizing these variants. Focus on understanding the 3-5-3 framework and the official 5 Scrum values.
THE COMPLETE SCRUM FRAMEWORK
3 PILLARS (Foundation)
Transparency | Inspection | Adaptation
5 SCRUM VALUES (Culture)
Commitment • Courage • Focus • Openness • Respect
3 ROLES (People)
- 👤 Product Owner (Value)
- 👤 Scrum Master (Process)
- 👥 Developers (Delivery)
THE SPRINT CYCLE (1-4 weeks)
📊 Product Backlog → 📋 Sprint Planning
→ 📝 Sprint Backlog → ☀️ Daily Scrum
→ ✅ Build Increment
→ 👁️ Sprint Review (Demo)
→ 🔍 Sprint Retrospective (Improve)
⟲ REPEAT ⟲
Download detailed guide: whatisscrum.org
© Dejan Majkic - Scrum Career Compass
Alt Text: "Complete Scrum framework diagram showing the relationship between the 3 pillars, 5 values, 3 roles, 5 events (Sprint cycle), and 3 artifacts in a comprehensive visual layout"
The flow:
- Product Owner manages the Product Backlog (all potential work)
- During Sprint Planning, the team selects items for the Sprint Backlog
- During the Sprint (1-4 weeks), the team holds Daily Scrums to stay aligned
- Team creates a working Product Increment
- At the end, they demonstrate it in the Sprint Review and get feedback
- The team reflects and improves in the Sprint Retrospective
- Repeat the cycle, improving each time
The Scrum Master facilitates this entire process, removing obstacles and coaching the team. The 3 Pillars provide the foundation, and the 5 Values guide behaviors.
What Framework IS Scrum? Understanding Agile vs. Scrum
This is one of the most searched questions, so let's clarify:
- Agile = The philosophy and mindset
- Values: Individuals and interactions, working software, etc.
- Principles: 12 principles from the Agile Manifesto
- Scrum = A specific framework for implementing Agile
- Concrete roles, events, and artifacts
- Lightweight and easy to understand
- Difficult to master
Think of it this way:
- Agile is like saying "I want to be healthy"
- Scrum is like following a specific workout program to get there
👉 Related: Agile vs Scrum: What's the Difference and Which Should You Use?
Scrum vs Other Agile Frameworks: Quick Comparison
Not sure if Scrum is right for you? Here's how it compares to other popular frameworks:
| Feature | Scrum | Kanban | XP (Extreme Programming) |
|---|---|---|---|
| Structure | Highly structured | Flexible, flow-based | Moderate structure |
| Iterations | Fixed-length Sprints | Continuous flow | 1-2 week iterations |
| Roles | 3 specific roles | No prescribed roles | Specific technical roles |
| Planning | Sprint Planning | Continuous planning | Iteration planning |
| Best For | Complex products | Operations, support | Software development |
| Change | Wait until next Sprint | Changes anytime | Changes welcome |
| Metrics | Velocity, burndown | Cycle time, WIP limits | Code quality, test coverage |
Which should you choose?
- Choose Scrum if: You need structure, have complex projects, and want clear accountability.
- Choose Kanban if: You have continuous work flow, need flexibility, or are just starting Agile.
- Choose XP if: You're building software and want to emphasize technical practices like TDD and pair programming.
Many teams actually combine frameworks. Scrumban (Scrum + Kanban) is increasingly popular.
👉 Deep dive: Agile vs. Waterfall Methodology QUIZ - Which Framework Is Right for Your Team?
Using Scrum in a Remote Work Environment
Since 2020, this has become one of the most important questions. The good news? Scrum actually works great remotely—sometimes even better than in-person.
Key adaptations for remote Scrum:
- Daily Scrums: Use video, keep them shorter (10 min), use virtual boards.
- Sprint Planning: Use collaborative tools like Miro or Mural, break into smaller sessions.
- Sprint Review: Record demos for async stakeholders, use annotation tools.
- Sprint Retrospective: Use anonymous voting tools, rotate facilitation.
👉 Complete guide: Running Effective Remote Scrum Ceremonies: Tools, Tips, and Templates
Common Scrum Mistakes (And How to Avoid Them)
After training 140,000+ students and leading Agile transformations, I've seen these mistakes repeated everywhere:
Mistake #1: Treating Daily Scrum as a Status Report to the Scrum Master
How to fix: Start your Daily Scrum with "What do we need to do today to meet our Sprint Goal?"
Mistake #2: Product Owner Skipping Sprint Reviews
Why it matters: The Product Owner learns what to prioritize next and builds stakeholder relationships.
Mistake #3: Skipping Retrospectives When "Everything's Fine"
Pro tip: Use Retros after successful Sprints to identify what made them successful and how to repeat it.
Mistake #4: Scrum Master Assigning Tasks
Why it matters: Self-organization builds ownership, accountability, and a more resilient team.
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