diegosouzapw Agile Scrum
What is Scrum?
Scrum: Agile framework for managing complex projects through iterative development in short cycles (sprints).
Core Principles
Iterative: Work in short cycles (1-4 weeks)
Incremental: Deliver working software each sprint
Collaborative: Cross-functional teams
Adaptive: Respond to change quickly
Transparent: Visible progress and blockers
Scrum vs Waterfall
Waterfall:
Requirements → Design → Development → Testing → Deployment
(6-12 months, all at once)
Scrum:
Sprint 1 → Sprint 2 → Sprint 3 → ...
(2 weeks each, continuous delivery)
Scrum Roles
Product Owner (PO)
Responsibilities:
- Define product vision
- Manage product backlog
- Prioritize features
- Accept/reject work
- Stakeholder communication
Key Activities:
- Write user stories
- Prioritize backlog
- Attend sprint planning
- Review sprint demos
- Make business decisions
Scrum Master (SM)
Responsibilities:
- Facilitate Scrum ceremonies
- Remove impediments
- Coach team on Scrum
- Protect team from distractions
- Foster continuous improvement
Key Activities:
- Run daily standups
- Facilitate retrospectives
- Remove blockers
- Shield team from interruptions
- Promote Scrum values
Not a Manager:
❌ Assign tasks
❌ Manage performance
❌ Make technical decisions
✓ Facilitate
✓ Coach
✓ Remove obstacles
Development Team
Responsibilities:
- Deliver working software
- Self-organize
- Estimate work
- Commit to sprint goals
- Continuously improve
Characteristics:
Cross-functional: All skills needed (dev, test, design)
Self-organizing: Decide how to do work
3-9 members: Small enough to be agile
Dedicated: Full-time on one team
Scrum Artifacts
Product Backlog
Definition: Prioritized list of all desired features and improvements
Format:
Priority | User Story | Points | Status
---------|-----------------------------------------------|--------|--------
1 | As a user, I want to login with email | 5 | Ready
2 | As a user, I want to reset my password | 3 | Ready
3 | As a user, I want to update my profile | 8 | Draft
4 | As an admin, I want to view user analytics | 13 | Draft
Characteristics:
Dynamic: Constantly evolving
Prioritized: Most valuable items at top
Estimated: Story points assigned
Refined: Regularly groomed
Sprint Backlog
Definition: Subset of product backlog committed to for current sprint
Example:
Sprint 15 (Jan 15 - Jan 28)
Goal: Complete user authentication
Stories:
☐ User login with email (5 points)
☐ Password reset (3 points)
☐ Email verification (5 points)
☐ Remember me functionality (3 points)
Total: 16 points
Team velocity: 15-20 points
Increment
Definition: Sum of all completed product backlog items at end of sprint
Criteria:
Done: Meets Definition of Done
Working: Fully functional
Tested: All tests passing
Deployable: Could ship to production
Scrum Ceremonies
Sprint Planning
When: First day of sprint Duration: 2-4 hours (for 2-week sprint) Attendees: Entire Scrum team
Agenda:
Part 1: What will we deliver?
- Review product backlog
- Select stories for sprint
- Define sprint goal
Part 2: How will we do it?
- Break stories into tasks
- Estimate tasks
- Commit to sprint backlog
Output:
✓ Sprint goal
✓ Sprint backlog
✓ Team commitment
Daily Standup
When: Every day, same time Duration: 15 minutes (max) Attendees: Development team (+ SM, PO optional)
Format:
Each team member answers:
1. What did I do yesterday?
2. What will I do today?
3. Any blockers?
Example:
John: "Yesterday I finished the login API. Today I'll work on
password reset. No blockers."
Jane: "Yesterday I worked on the UI. Today I'll continue.
Blocked on API documentation."
SM: "I'll get you that documentation after standup."
Rules:
✓ Stand up (keeps it short)
✓ Same time, same place
✓ Focus on progress and blockers
✓ Parking lot for detailed discussions
❌ Problem-solving (take offline)
❌ Status reports to manager
❌ Longer than 15 minutes
Sprint Review (Demo)
When: Last day of sprint Duration: 1-2 hours Attendees: Scrum team + stakeholders
Agenda:
1. Review sprint goal
2. Demo completed work
3. Discuss what's done vs not done
4. Review updated product backlog
5. Discuss next steps
Example:
PO: "Our goal was to complete user authentication. Let me show you
what we built..."
[Demo of login, password reset, email verification]
Stakeholder: "Great! Can we add social login next sprint?"
PO: "I'll add it to the backlog and prioritize."
Sprint Retrospective
When: After sprint review Duration: 1-1.5 hours Attendees: Scrum team only
Format:
1. What went well?
2. What didn't go well?
3. What will we improve?
Example:
Went Well:
+ Good collaboration between dev and design
+ All stories completed
+ No major blockers
Didn't Go Well:
- Too many meetings interrupted flow
- Unclear requirements on one story
- CI/CD pipeline was slow
Action Items:
→ Block focus time (no meetings 9-12am)
→ Refine stories better in backlog grooming
→ Optimize CI/CD pipeline (assign to John)
Techniques:
- Start/Stop/Continue
- Mad/Sad/Glad
- 4Ls (Liked, Learned, Lacked, Longed for)
- Sailboat (wind/anchor)
Backlog Refinement (Grooming)
When: Mid-sprint Duration: 1-2 hours Attendees: Scrum team
Activities:
- Review upcoming stories
- Add details and acceptance criteria
- Estimate story points
- Split large stories
- Remove obsolete items
User Stories
Format
As a [role]
I want [feature]
So that [benefit]
Examples
As a user
I want to reset my password
So that I can regain access if I forget it
As an admin
I want to view user analytics
So that I can understand user behavior
Acceptance Criteria
User Story: Password reset
Acceptance Criteria:
✓ User can request reset via email
✓ Reset link expires after 24 hours
✓ User can set new password (min 8 chars)
✓ User receives confirmation email
✓ Old password no longer works
INVEST Criteria
Independent: Can be developed separately
Negotiable: Details can be discussed
Valuable: Provides value to users
Estimable: Can be estimated
Small: Fits in one sprint
Testable: Can be verified
Story Points and Estimation
Story Points
Definition: Relative measure of effort, complexity, and uncertainty
Not:
❌ Hours or days
❌ Absolute measure
Fibonacci Scale:
1, 2, 3, 5, 8, 13, 21
1 = Trivial (change button text)
3 = Small (add form field)
5 = Medium (new API endpoint)
8 = Large (authentication system)
13 = Very large (payment integration)
21+ = Too large (split into smaller stories)
Planning Poker
Process:
1. PO reads user story
2. Team discusses and asks questions
3. Each member selects estimate card (secretly)
4. All reveal cards simultaneously
5. Discuss differences (highest and lowest explain)
6. Re-estimate until consensus
Example:
Story: "Add password reset"
Estimates revealed: 3, 5, 5, 8
Discussion:
- Why 3? "Seems straightforward, we've done similar"
- Why 8? "Need to integrate with email service, handle edge cases"
Re-estimate: 5, 5, 5, 5 → Consensus: 5 points
Velocity
Definition
Velocity: Average story points completed per sprint
Calculation
Sprint 1: 15 points
Sprint 2: 18 points
Sprint 3: 16 points
Average velocity: (15 + 18 + 16) / 3 = 16.3 points/sprint
Usage
Use velocity to:
- Plan sprint capacity
- Forecast release dates
- Track team performance trends
Don't:
❌ Compare teams (different scales)
❌ Use as performance metric
❌ Pressure team to increase velocity
Definition of Done (DoD)
Purpose
Shared understanding of what "done" means
Example DoD
A story is done when:
✓ Code written and reviewed
✓ Unit tests written and passing
✓ Integration tests passing
✓ Code merged to main branch
✓ Deployed to staging
✓ Acceptance criteria met
✓ Documentation updated
✓ Product Owner accepted
Levels
Story Done: Meets story DoD
Sprint Done: All stories done + sprint goal met
Release Done: All sprints done + production ready
Sprint Workflow
Sprint Cycle (2 weeks)
Day 1: Sprint Planning (4 hours)
- Select stories
- Define sprint goal
- Break into tasks
Day 2-9: Development
- Daily standup (15 min)
- Work on tasks
- Update board
Day 5: Backlog Refinement (2 hours)
- Groom upcoming stories
Day 10: Sprint Review (2 hours)
- Demo completed work
Sprint Retrospective (1.5 hours)
- Discuss improvements
Day 11: Start next sprint
Scrum Board
Columns
To Do | In Progress | In Review | Done
------|-------------|-----------|-----
Story | Story | Story | Story
Story | Task | Task | Story
Task | | | Task
Example
To Do | In Progress | In Review | Done
---------------|------------------|------------------|-------------
Password reset | Login UI | Login API | User signup
Email verify | Password API | Email templates | Database setup
Profile update | | |
Digital Tools
- Jira
- Trello
- Azure DevOps
- Linear
- Asana
Common Metrics
Burndown Chart
Story Points Remaining
40 |●
| ●
30 | ●
| ●
20 | ●
| ●
10 | ●
| ●
0 |________________●
Day 1 ... Day 10
Ideal: Straight line from start to zero
Actual: May vary but should trend down
Velocity Chart
Story Points
20 | ■ ■ ■
| ■ ■ ■
15 | ■ ■
|
10 |
|_________________________
S1 S2 S3 S4 S5 S6
Track: Average velocity over time
Goal: Stable, predictable velocity
Cumulative Flow Diagram
Stories
40 | Done
| In Review
30 | In Progress
| To Do
20 |
|
10 |
|_________________________
Week 1 Week 2 Week 3
Shows: Work distribution across states
Goal: Smooth flow, no bottlenecks
Scaling Scrum
Multiple Teams
Scrum of Scrums:
- Representatives from each team meet
- Discuss dependencies
- Coordinate work
- Remove cross-team blockers
SAFe (Scaled Agile Framework)
Team Level: Scrum teams
Program Level: Agile Release Train (ART)
Portfolio Level: Strategic themes
LeSS (Large-Scale Scrum)
One product backlog
One Product Owner
Multiple teams
Coordinated sprints
Best Practices
1. Keep Sprints Consistent
✓ Same duration (2 weeks recommended)
✓ Same day of week
✓ Predictable rhythm
2. Protect the Sprint
✓ No scope changes mid-sprint
✓ PO shields team from distractions
✓ Focus on sprint goal
3. Maintain Sustainable Pace
✓ Don't overcommit
✓ Leave buffer for unknowns
✓ Avoid burnout
4. Embrace Change
✓ Adapt based on feedback
✓ Continuously improve
✓ Inspect and adapt
5. Focus on Value
✓ Prioritize high-value features
✓ Deliver working software
✓ Get user feedback early
Common Pitfalls
❌ Scrum Theater
Going through motions without embracing values
- Standups become status reports
- Retrospectives don't lead to change
- Sprint planning is just task assignment
❌ Scope Creep
Adding work mid-sprint
- Breaks sprint commitment
- Reduces predictability
- Frustrates team
❌ Skipping Ceremonies
"We're too busy to do retrospectives"
- Misses improvement opportunities
- Repeats same mistakes
❌ Treating Scrum Master as Project Manager
SM assigns tasks and tracks hours
- Undermines self-organization
- Creates dependency
❌ Ignoring Definition of Done
"It's done except for tests"
- Accumulates technical debt
- Reduces quality
Transitioning to Scrum
Step 1: Training
- Scrum fundamentals for all
- Role-specific training
- Certified Scrum Master (CSM)
Step 2: Form Teams
- Cross-functional teams
- Assign roles (PO, SM, Dev)
- Co-locate if possible
Step 3: Create Backlog
- Gather requirements
- Write user stories
- Prioritize
- Estimate
Step 4: Run First Sprint
- Keep it simple
- Focus on learning
- Expect mistakes
Step 5: Inspect and Adapt
- Honest retrospectives
- Implement improvements
- Iterate on process
Tools and Resources
Project Management
- Jira (most popular)
- Azure DevOps
- Linear
- Trello
- Asana
Estimation
- Planning Poker (app or cards)
- Scrum Poker Online
- PlanITpoker
Retrospectives
- Retrium
- FunRetro
- Miro
- Metro Retro
Learning
- Scrum Guide (official)
- Scrum Alliance
- Scrum.org
- Mountain Goat Software (Mike Cohn)
Summary
Scrum: Agile framework for iterative development
Roles:
- Product Owner (what to build)
- Scrum Master (how to work)
- Development Team (build it)
Artifacts:
- Product Backlog (all work)
- Sprint Backlog (sprint work)
- Increment (done work)
Ceremonies:
- Sprint Planning (plan sprint)
- Daily Standup (sync daily)
- Sprint Review (demo work)
- Sprint Retrospective (improve)
- Backlog Refinement (prepare backlog)
Key Concepts:
- User stories (requirements)
- Story points (estimation)
- Velocity (capacity)
- Definition of Done (quality)
- Sprint (time-box)
Benefits:
- Faster time to market
- Higher quality
- Better adaptability
- Improved collaboration
- Continuous improvement
Success Factors:
- Committed team
- Empowered Product Owner
- Servant-leader Scrum Master
- Stakeholder support
- Continuous learning