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® IBM Software Group © 2007 IBM Corporation Agile Software Development: What’s Really Going On Scott W. Ambler Practice Leader Agile Development.

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Presentation on theme: "® IBM Software Group © 2007 IBM Corporation Agile Software Development: What’s Really Going On Scott W. Ambler Practice Leader Agile Development."— Presentation transcript:

1 ® IBM Software Group © 2007 IBM Corporation Agile Software Development: What’s Really Going On Scott W. Ambler Practice Leader Agile Development

2 IBM Software Group | Rational software 2 Scott Ambler - Background  Practice Leader Agile Development  Fellow – International Association of Software Architects  www-306.ibm.com/software/rational/bios/ambler.html

3 IBM Software Group | Rational software 3 Presentation Overview  Warning!  Agile Software Development (ASD)  Agile Adoption Rates  Going Beyond the Extreme Rhetoric

4 IBM Software Group | Rational software 4 Warning!  I’m spectacularly blunt at times  Many new ideas will be presented  Some may not fit well into your existing environment  Some will challenge your existing notions about software development  Some will confirm your unvoiced suspicions  Don’t make any “career-ending moves”  Be skeptical but open minded

5 ® IBM Software Group © 2007 IBM Corporation Agile Software Development (ASD) What is ASD? How it’s different Mythbusters Why does ASD Work? Some Common Practices

6 IBM Software Group | Rational software 6 What is Agile?  An iterative and incremental (evolutionary) approach performed in a highly collaborative manner with just the right amount of ceremony to produce high quality software in a cost effective and timely manner which meets the changing needs of its stakeholders.  Core principles  “Fits just right” process  Continuous testing and validation  Consistent team collaboration  Rapid response to change  Ongoing customer involvement  Frequent delivery of working software

7 IBM Software Group | Rational software 7 How Agile is Different  Focus on collaboration:  Less paperwork and more conversation  Stakeholders actively involved  Focus on working software:  Greater feedback makes agile projects easier to manage  Less documentation is required  Less bureaucracy  Agilists are generalizing specialists:  Less hand offs between people  Less people required  Specialists find it difficult at first to fit into the team  Agile is based on practice, not theory:  This is a significant change from traditional  You need to see how agile works in practice to truly understand it

8 IBM Software Group | Rational software 8 Mythbusters Myth 1.No Documentation 2.Undisciplined 3.No Planning 4.Not Predictable 5.Does Not Scale 6.Is a Fad 7.Silver Bullet 8.RUP isn’t agile 9.Not Fixed Price Reality 1.Agile Documentation 2.Requires great discipline 3.Just-in-time (JIT) planning 4.Far more predictable 5.Eclipse is agile 6.It’s quickly becoming the norm 7.It requires skilled people 8.RUP is as agile as you make it 9.Agile provides stakeholders control over the budget, schedule, and scope

9 IBM Software Group | Rational software 9 Why Agile Works

10 IBM Software Group | Rational software 10 Some Common Practices  Regular Deployment of Working Software  Pair Programming  Refactoring  Continuous Integration  Test Driven Development (TDD)  Shared Code Ownership  Active Stakeholder Participation

11 ® IBM Software Group © 2007 IBM Corporation Agile Adoption Rates * Have you Adopted Agile? Number of Projects Run Success Rates * Figures from an April 2007 Survey to be summarized in the August 2007 issue of Dr. Dobb’s Journal

12 IBM Software Group | Rational software 12 Has Your Organization Adopted One or More Agile Techniques?

13 IBM Software Group | Rational software 13 Number of Agile Projects Run

14 IBM Software Group | Rational software 14 % of Successful Agile Projects

15 ® IBM Software Group © 2007 IBM Corporation Going Beyond the Extreme Rhetoric Modeling and Documentation Rational Unified Process (RUP) Testing Database Refactoring Database Regression Testing Governance

16 IBM Software Group | Rational software 16 Agile Model Driven Development (AMDD) Project Level

17 IBM Software Group | Rational software 17 Agile Documentation  Document the stable, not the speculative  Agile documents:  Maximize stakeholder ROI  Describe “good things to know”  Have a specific customer and facilitate the work efforts of that customer  Are sufficiently accurate, consistent, and detailed

18 IBM Software Group | Rational software 18 Rational Unified Process (RUP)

19 IBM Software Group | Rational software 19 Agile Testing  Regression testing is critical to the success of evolutionary (iterative and incremental) development  Acceptance tests are considered to be primary requirements artifacts  Unit tests are considered to be detailed design artifacts

20 IBM Software Group | Rational software 20 Database Refactoring  A database refactoring is a simple change to a database schema that improves its design while retaining both its behavioral and informational semantics. Examples: Move Column, Rename Table, and Replace Blob With Table.  A database schema includes both structural aspects such as table and view definitions as well as functional aspects such as stored procedures and triggers.  Important: Database refactorings are a subset of schema transformations, but they do not add functionality. 

21 IBM Software Group | Rational software 21 Database Testing

22 IBM Software Group | Rational software 22 Organization & Meetings Roles & Responsibilities Processes Measures Policies & Standards Mission & Principles Agility at Scale: “Right-Sizing” Governance  Pragmatic Governance Body  Staged Program Delivery  Simple And Relevant Metrics  Continuous Project Monitoring  Iterative Development  Adapt The Process  Risk-Based Milestones  Continuous Improvement  Embedded Compliance  Manage Project Pipeline By Business Value  Scenario-Driven Development  Self-Organizing Teams  Align HR Policies With IT Values  Align Organization Structure With Architecture  Integrated Lifecycle Environment  Valued Corporate Assets  Flexible Architectures

23 ® IBM Software Group © 2007 IBM Corporation Keep In Touch! Scott W. Ambler www-306.ibm.com/software/rational/bios/ambler.html

24 IBM Software Group | Rational software 24 References and Recommended Reading        Ambler, S.W. (2002). Agile Modeling: Effective Practices for XP and the UP. New York: John Wiley & Sons.  Ambler, S.W. (2003). Agile Database Techniques. New York: John Wiley & Sons.  Ambler, S.W. (2004). The Object Primer 3 rd Edition: AMDD with UML 2. New York: Cambridge University Press.  Ambler, S.W. and Sadalage, P.J. (2006). Refactoring Databases: Evolutionary Database Design. Reading, MA: Addison Wesley Longman, Inc.  Larman, C. (2004). Agile and Iterative Development: A Manager’s Guide. Reading, MA: Addison Wesley  McGovern, J., Ambler, S.W., Stevens, M., Linn, J., Sharan, V., & Jo, E. (2003). The Practical Guide to Enterprise Architecture. Prentice Hall PTR.


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