Agile Software Development: An Overview of Its Benefits and Principles
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This document provides an overview of agile software development. It begins by outlining the principles of the Manifesto for Agile Development, which values individuals, interactions, working software, and customer collaboration over processes, tools, documentation, and contract negotiation. The document then contrasts the traditional waterfall model with the iterative agile model. It notes several problems with waterfall such as difficulty adapting to change and long waits for value. Benefits of the agile model are then outlined, including increased productivity, reduced risk, higher customer satisfaction, and improved code quality. Case studies from a survey and Yahoo highlight positive results from adopting agile such as increased productivity and team morale.
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Agile Software Development: An Overview of Its Benefits and Principles
- 1. Agile Software Development An Overview
- 2. “Simplicity does not precede complexity, but follows it.” -Alan Perlis American computer scientist, inventor of Algol (the mother of object oriented languages)
- 3. Manifesto for Agile Development
- 4. Manifesto for Agile Development Individuals and interactions over processes and tools
- 5. Manifesto for Agile Development Individuals and interactions over processes and tools Working software over comprehensive documentation
- 6. Manifesto for Agile Development Individuals and interactions over processes and tools Working software over comprehensive documentation Customer collaboration over contract negotiation
- 7. Manifesto for Agile Development Individuals and interactions over processes and tools Working software over comprehensive documentation Customer collaboration over contract negotiation Responding to change over following a plan
- 8. How does it work?
- 9. Iteration
- 10. Iteration
- 11. Iteration
- 12. Waterfall Release Plan & Test Design Code Analyse 6-12 months = potential release
- 13. Plan Iteration Iteration Iteration Iteration Iteration Test Code Iteration Design Analyse 1-3 weeks Iteration Iteration Iteration Agile Iterations Iteration Iteration Release = potential release
- 15. Problems with Waterfall Difficult to react to change
- 16. Problems with Waterfall Difficult to react to change Stakeholders must wait to see tangible business value
- 17. Problems with Waterfall Difficult to react to change Stakeholders must wait to see tangible business value Web applications appear static potentially losing customers
- 18. Problems with Waterfall Difficult to react to change Stakeholders must wait to see tangible business value Web applications appear static potentially losing customers Stressful crunch periods towards end of project
- 19. Problems with Waterfall Difficult to react to change Stakeholders must wait to see tangible business value Web applications appear static potentially losing customers Stressful crunch periods towards end of project Increased cost
- 21. Benefits of Agile Increased Productivity
- 22. Benefits of Agile Increased Productivity Reduced Risk
- 23. Benefits of Agile Increased Productivity Reduced Risk Higher Customer Satisfaction
- 24. Benefits of Agile Increased Productivity Reduced Risk Higher Customer Satisfaction Customer Feedback Loop
- 25. Benefits of Agile Increased Productivity Reduced Risk Higher Customer Satisfaction Customer Feedback Loop Visibility & Accountability
- 26. Benefits of Agile Increased Productivity Reduced Risk Higher Customer Satisfaction Customer Feedback Loop Visibility & Accountability Increased Code Quality
- 27. Benefits of Agile Increased Productivity Reduced Risk Higher Customer Satisfaction Customer Feedback Loop Visibility & Accountability Increased Code Quality Easier, Accurate Estimation
- 28. Benefits of Agile Increased Productivity Reduced Risk Higher Customer Satisfaction Customer Feedback Loop Visibility & Accountability Increased Code Quality Easier, Accurate Estimation Creates a Culture of Success
- 29. Watson my good man, Agile would I would sounds overlook spiffing something as Holmes, but elementary as what about the the facts? evidence?
- 30. Dr. Dobb’s Journal Survey 642 developers and managers surveyed after adoption of Agile... Factor Improved No Change Worsened Productivity 82% 13% 5% Quality 77% 14% 9% Stakeholder 78% 15% 7% Satisfaction Cost 37% 40% 23% http://www.ddj.com/architect/207600615?pgno=1 May 07, 2008
- 31. Yahoo!: A Case Study “At Yahoo!, we have migrated nearly 90 projects to Scrum in the last 30 months, totalling almost 900 people.” -Pete Deemer, Chief Product Developer, Yahoo!
- 32. Yahoo! A Case Study Productivity 68% of respondents reported Scrum is better or much better; 5% reported Scrum is worse or much worse; 27% reported Scrum is about the same. Team Morale 52% of respondents reported Scrum is better or much better; 9% reported Scrum is worse or much worse; 39% reported Scrum is about the same or much worse.
- 33. Yahoo! A Case Study Adaptability 63% of respondents reported Scrum is better or much better; 4% reported Scrum is worse or much worse; 33% reported Scrum is about the same. Accountability 62% of respondents reported Scrum is better or much better; 6% reported Scrum is worse or much worse; 32% reported Scrum is about the same.
- 34. Yahoo! A Case Study Collaboration and Cooperation 81% of respondents reported Scrum is better or much better; 1% reported Scrum is worse or much worse; 18% reported Scrum about the same.
- 35. Yahoo! A Case Study According to Product Owners, Team productivity increased an average of 36%. 85% of team-members stated that they would continue using Scrum if the decision were solely up to them.