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AGILE SOFTWARE DEVELOPMENT

AGILE SOFTWARE DEVELOPMENT. AYSE GUL YAMAN. Outline. Traditional approach Agile Software Development Agile Values Agile Principles Limitations of Agile Methodologies Using Components to Reduce Limitations. Traditional approach. Predictive methods Planning the future in detail

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AGILE SOFTWARE DEVELOPMENT

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  1. AGILE SOFTWARE DEVELOPMENT AYSE GUL YAMAN

  2. Outline • Traditional approach • Agile Software Development • Agile Values • Agile Principles • Limitations of Agile Methodologies • Using Components to Reduce Limitations

  3. Traditional approach • Predictive methods • Planning the future in detail • Waterfall model -requirements -design -coding -testing

  4. Agile Software Development(A new approach) • Adaptive methods • Adapting quickly to changing realities • Short timeboxes(iterations) • Each iteration include -planning -requirement analysis -design -coding -testing

  5. Agile methods • eXtreme Programming(XP) • Feature-Driven Development(FDD) • Agile Modeling • Extreme Modeling • Scrum • Adaptive Software Development(ASD) • Crystal Clear and Other Crystal Methodologies • Dynamic Systems Development Method(DSDM)

  6. Agile Alliance[2001] • Agile Manifesto • Values and Principles

  7. Agile Values • 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. The Agile Principles • Customer satisfaction by rapid,continuous delivery of useful software • Working software is delivered frequently (weeks rather than months) • Working software is the principle measure of progress

  9. The Agile Principles(cont.) • Even late changes in requirements are welcomed • Close,daily cooperation between business people and developers • Face-to-face conversation is the best form of communication

  10. The Agile Principles(cont.) • Projects are built around motivated individuals,who should be trusted • Continuous attention to technical excellence and good design • Simplicity

  11. The Agile Principles(cont.) • Self-orginizing teams • Regular adaptation to changing circumstances • Agile processes promote sustainable development

  12. Limitations of Agile Methodologies • Projects with distributed development teams and resources • Outsourcing • Building or using reusable artifacts • Using legacy systems or Commercial-Off-The-Shelf(COTS) components • Projects involving large teams • Development of large software systems • Development of safety-critical software systems

  13. Using Components • Larger team in building large software -Problem can be divided into smaller units and then parts of the team are responsible for developing particular components in an agile manner • System can be extended -Defining additional components or extending the scope of existing components • Communication -Component interfaces can help in communication between team members and customers

  14. Using Components(cont.) • Reusability -Well-defined components can be reused in a similar context in the future • Building large safety-critical systems -Using pre-tested COTS components can further increase the quality of the safety-critical software

  15. References • http://www.agilealliance.org/ • http://en.wikipedia.org/wiki/Agile_software_development • http://www.ambysoft.com/ • Zoran Stojanovic, Ajantha Dahanayake, Henk Sol, "Modeling and Architectural Design in Agile Development Methodologies", The 8th CaiSE/IFIP8.1 International Workshop on Evaluation of Modeling Methods in Systems Analysis and Design EMMSAD> '> 03, Velden, Austria, June 16-20, 2003, pp. 180-189. • Zoran Stojanovic,  Ajantha Dahanayake, Henk Sol, "Component-Oriented Agile Software Development ", 4th International Conference on eXtreme Programming and Agile Processes in Software Engineering (XP 2003), May 26-30, 2003, Lecture Notes in Computer Science, Springer-Verlag Heidelberg, Volume 2675 / 2003, pp. 315-318. Questions?

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