The document discusses various agile methodologies in software development, specifically extreme programming (XP), Scrum, and Lean practices. It highlights their applications, strengths, and limitations in project management, emphasizing iterative and incremental development while also addressing the context in which these methodologies thrive. Additionally, the document explores the Lean Startup approach, focusing on entrepreneurship and validated learning through iterative processes.

1. XP, Scrum, Lean
and
The Lean Startup
Julian Higman

2. Introduction
20 years in software development.
Defence, finance, internet startups.
Started with formal methods.
Last 10 years have been agile.

3. Agile
Software development methods based on
iterative and incremental development.
Requirements and solutions evolve during
projects.
Rapid response to change.

4. Extreme Programming (XP)
Applying engineering best practice to iterative
software development
Extreme Programming Explained (Kent Beck, 1999)

5. XP Practices
Sit Together Weekly Cycle
Whole Team Quarterly Cycle
Informative Workspace 10-Minute Build
Energized Work Continuous Integration
Pair Programming Test-First Programming
Stories Incremental Design
Slack

7. XP - where does it work?
Small co-located teams
Internal development functions
Onsite customer
Single product, single codebase
Consistent development environment

8. XP - what's missing?
Planning
Scaling
Innovation
Measurement of value
Wider business context

9. Scrum
Iterative process for managing projects with
self-organising teams
Agile Project Management with Scrum (Ken Schwaber, 2004)

10. Scrum Practices
Roles : Scrum Master, Product Owner
Stories + Estimates
Sprints planning, sprint reviews
Product backlog
Small cross-functional team
Self-organising
Working environment
Daily scrums - pigs and chickens

11. Scrum - where does it work
Non-software projects
Cross-functional teams
Larger organisations
Hierarchichal organisations

12. Scrum - what's missing?
Innovation
Process improvement

13. Lean
Applying lean manufacturing methods to
software to increase efficiency and speed
Lean Software Development (Mary and Tom Poppendieck, 2003)

14. Lean Practices
Eliminate waste
Amplify learning
Decide late
Deliver fast
Empower the team
Build integrity in
See the whole

15. Lean - where does it work?
Incremental delivery
Repeated processes
Potential to optimise

16. The Lean Startup
Applying lean principles to building a business
The Lean Startup (Eric Dries, 2011)

17. Lean Startup Principles
Entrepreneurs are everywhere
Entrepreneurship is management
Validated learning
Build-Measure-Learn
Innovation Accounting

19. Connections
Unstable environments
Iterative processes
Continuous deployment
Measuring success
Fail quickly

20. Questions?