From traditional software development process to scrum

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Short overview from traditional software development to Scrum. What is the difference? Starting point for discussion at agile forum Vietnam.

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  • Requirement is never fixed in the software development
  • People may think that this is the way Scrum manages requirement changes
  • Just my stories in the development point of view, don’t say about theory or business point of view
  • Agile principles?
  • Easy to understand but extremely to implement.
  • But move peopleout if they cannot adapt
  • Different thinking between management and engineering levels -> engineering is forced to live a lie
  • From traditional software development process to scrum

    1. 1.  Son Nguyen, son.nguyen.thanh.81@gmail.com YM & Skype: ng_thanhson
    2. 2.  Introduction Traditional methodologies My Scrum stories
    3. 3.  About me Just a brainstorming and discussion session Please be active
    4. 4.  
    5. 5. 2003 2004 2005 2006 2007 2008 CMMi TL9000Waterfall XP TDD UML Unified Process Scrum Continuous Integration
    6. 6. Requirements Requirements Analysis Architecture Design Detail Design Implementation Testing Maintenance
    7. 7.  Waterfall (plan driven) is a well known methodology / process It has dependencies on phases (gated stages) In theory it works great but in practice it may not work It is fundamentally based on an assembly-line mentality for developing software -> no point to go back No mechanism to deal with delays -> buffer -> over estimation
    8. 8. The software factory
    9. 9. Requirements Requirements Analysis Architecture Design Detail Design Implementation Testing Maintenance
    10. 10.  Can start working with incomplete requirements, architecture, design, … Can go back to the previous step and update It is still messy for long time project Sometimes it is unpredictable for the project delivery
    11. 11. Requirements Quick DesignRefine & ImplementationRework Evaluation & Update Final Testing Release
    12. 12.  Good for an environment of changing requirements No methodology for each step Hard in the planning point of view Hard to maintain May cause a lot of reworks and increase cost
    13. 13.  
    14. 14. Let’s Turn Our ThinkingUpside Down
    15. 15.  Self-organization, disciplined, motivation, ownership, and pride You may have to accept: o Some first failed sprints o Give some not qualified members time and training to adjust
    16. 16.  Adaptive process Higher commitment and discipline Flexibility and adaptiveness with work requirements change Collaboration, freely to contribute … But be careful! There is nothing good at the first time, you need to build it with right people
    17. 17.  No need to spend too much time in planning No code written in early phases for requirement validation Communication issue Tester-developer schedule alignment No risk deferral Adaptive with requirement change … But be careful, don’t just do “Iterative”
    18. 18. Plan Driven Value Driven Fixed Variable Scope ScopeVariable Variable Fixed Fixed Time Resources Time Resources
    19. 19.  Increasing Innovation Increase the quality of the deliverables Deliver the highest business value features first Onsite customer … It is not easy to do “Variable Scope”
    20. 20.  Remove organizational overhead Remove management pressure from teams Remove process / planning overhead … It is really hard and need support from your management level

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