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Scrum Day Europe 2015 - Scaled Professional Scrum

‚Scaling' became the most hyped and at the same time the most diversely interpreted word in the context of agile. The fad and the confusion obfuscate. Despite Scrum being the most adopted framework for agile software development, scaling Scrum in a way that respects Scrum's foundations and principles is a challenge. Many don’t scale the benefits of Scrum, but organizational dysfunctions that remain unaddressed through weak implementations of Scrum.

In his opening keynote of Scrum Day Europe 2015 Gunther shared the views of, the organization of Scrum co-creator Ken Schwaber, on Scaled Professional Scrum.

Gunther shepherds the Professional Series at, is a partner of Ken Schwaber and represents in Europe.

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Scrum Day Europe 2015 - Scaled Professional Scrum

  1. 1. by – Improving the Profession of Software Development Scaled Professional Scrum Focused. Effective. Viable. Gunther Verheyen Shepherding Professional Scrum July 2, 2015 Amsterdam
  2. 2. 2© 1993-2015, All Rights Reserved MIN 3 Have you been engaged in efforts to scale Scrum? Raise your hand if your organization defines ‘scale’ as… • Multiple teams working on one product • Multiple teams working on their individual products • Multiple teams working on a suite of integrated products • One team working on several products in parallel • The complete IT organization adopting Scrum • A 360° organizational transformation toward Agile Short Survey About You
  3. 3. 3© 1993-2015, All Rights Reserved Scaled Scrum Scaled Professional Scrum “It takes two to scale.” – Gunther Verheyen
  4. 4. 4© 1993-2015, All Rights Reserved Focus. Transparency. ScaledScrum
  5. 5. 5© 1993-2015, All Rights Reserved Definition of Scaled Scrum 1. Any implementation of Scrum where multiple Scrum Teams build one product or a standalone set of product features, in one or more Sprints. 2. Any implementation of Scrum where multiple Scrum Teams build multiple related products or sets of product features, in one or more Sprints.
  6. 6. 6© 1993-2015, All Rights Reserved A system’s components interact purposefully toward a shared goal without externally exerted power. Frequent decisions of adaptation are based on knowledge gained through inspection and experience. Scrum’s DNA Self-Organization Empiricism
  7. 7. 7© 1993-2015, All Rights Reserved Scrum 1. One team pulls work from one Product Backlog. 2. Each Sprint delivers a releasable Increment of product.
  8. 8. 8© 1993-2015, All Rights Reserved Professional Scrum Professional Scrum Mechanical Scrum Technical Excellence Values and Principles Any Scrum instance that implements Scrum’s mechanics, its values and principles, and technical excellence.
  9. 9. 9© 1993-2015, All Rights Reserved Technical Excellence THE MEDUSA EFFECT Poorly maintained codebases have…
  10. 10. 10© 1993-2015, All Rights Reserved One Scrum Team Doing Work
  11. 11. 11© 1993-2015, All Rights Reserved Three Scrum Teams Doing Work
  12. 12. 12© 1993-2015, All Rights Reserved Nine Scrum Teams Doing Work
  13. 13. 13© 1993-2015, All Rights Reserved • People (communication) • Business domains and requirements • Technology • Software • Infrastructure • Intra-team • Cross-team • External Dependencies Dimensions Where
  14. 14. 14© 1993-2015, All Rights Reserved Identify and work around dependencies: – Prior to work occurring – Ongoing – Persistent – In all dimensions Reveal dependencies that remained unnoticed: – Frequent integration – Acceptance testing – Continual build and delivery – Minimize technical debt Dealing with Dependencies Proactive Reification* *Reification: Making something real, bringing something into being, or making something concrete.
  15. 15. 15© 1993-2015, All Rights Reserved Your ability to scale depends on your ability to continuously: – Identify and remove dependencies – Integrate work across all levels – Create and inspect reified Increments
  16. 16. 16© 1993-2015, All Rights Reserved The Nexus Scaled Professional Scrum “A man who carries a cat by the tail learns something he can learn in no other way.” - Mark Twain
  17. 17. 17© 1993-2015, All Rights Reserved Nexus –noun ˈnek-səs : a relationship or connection between people or things
  18. 18. 18© 1993-2015, All Rights Reserved Scrum for Multiple Teams 1. A product has one Product Backlog. 2. Multiple Teams create integrated Increments.
  19. 19. 19© 1993-2015, All Rights Reserved The Nexus™ – An Exoskeleton for 3-9 Scrum Teams
  20. 20. 20© 1993-2015, All Rights Reserved MIN 3 We have heard Scrum only works for singular teams. We have heard Scrum is not enough at scale. We wonder… • Isn’t scaled Scrum through the Nexus still Scrum? • Doesn’t the Nexus efficiently scale product development with Scrum? Scrum Is Not Enough?
  21. 21. 21© 1993-2015, All Rights Reserved The Nexus Augments Scrum Builds on Scrum principles, values, and foundations • Creates communication pathways • Widens and deepens inspect and adapt mechanisms • Fosters continued transparency • Relies on bottom-up intelligence Eschews fixed, defined solutions that add overhead.
  22. 22. 22© 1993-2015, All Rights Reserved Nexus - Roles, Events and Artifacts Roles Events Artifacts Development Teams The Sprint Product Backlog Nexus Integration Team* Nexus Sprint Planning* Nexus Sprint Backlog* Product Owner Sprint Planning Sprint Backlog Scrum Master Nexus Daily Scrum* Integrated Increment Daily Scrum Nexus Sprint Review* Sprint Review Nexus Sprint Retrospective* *Nexus specific
  23. 23. 23© 1993-2015, All Rights Reserved The Nexus Integration Team • A Scrum Team • Works off of Product Backlog • Members are full or part time • Composition may change between Sprints • Focus is dependencies and facilitation of integration
  24. 24. 24© 1993-2015, All Rights Reserved The Nexus interconnects 3-9 Scrum Teams: – Exhibiting Scrum’s principles and DNA –Creating one reified Increment of product – Minimal overhead, maximized outcome
  25. 25. 25© 1993-2015, All Rights Reserved Managing Scaled Scrum Scaled Professional Scrum “Success in management requires learning as fast as the world is changing.” – Warren Bennis
  26. 26. 26© 1993-2015, All Rights Reserved • What must be done to integrate the work? • How frequently do you need the work integrated into releasable product? • How do you measure and manage the work and the integration? • What is the overhead of integration and delivery? • Are you balancing cost and benefits of this overhead with value produced? • Is the cost systematically being reduced? Core Questions When Managing Any Scaling Effort Process Cost
  27. 27. 27© 1993-2015, All Rights Reserved Scaled Professional Scrum Practices Dependencies Reification Feature teams ALM artifact automation Micro-services Test-driven development Product Backlog metadata Continuous integration of all work Continuous Product Backlog refinement Frequent builds Story mapping Frequent testing Product Backlog cross-team dependency mapping Limited branching Communities of practice Descaling and Scrumble Architecture contains experimentation and A/B switches Thin sliced Product Backlog items compose Sprint backlog for ATDD
  28. 28. 28© 1993-2015, All Rights Reserved Descaling • Scale up with caution • Add practices or tools • Reduce the overall pace by reducing the number of teams to a more sustainable number (and/or velocity) • Clean up and integrate the current software so it can be built upon in future Sprints Productivity Teams
  29. 29. 29© 1993-2015, All Rights Reserved Scrumble • When technical debt, domain knowledge and test results overwhelm forward progress, Scrumble • Scrumble is a period of unknown duration and staffing when work is done to allow forward progress to resume • Staffing should be minimized and talent applied maximized Teams Productivity
  30. 30. 30© 1993-2015, All Rights Reserved How To Measure the Progression of Your Scaling Effort? “Our highest priority is to satisfy the customer through early and continuous delivery of valuable software.”
  31. 31. 31© 1993-2015, All Rights Reserved Nexus+ Scaled Professional Scrum “Put all your eggs in one basket and then watch that basket.” – Mark Twain
  32. 32. 32© 1993-2015, All Rights Reserved Yes, You Can Scale Beyond The Nexus Value.Dependencies.
  33. 33. 33© 1993-2015, All Rights Reserved The Challenge of Large Scale Development • The Nexus starts to fray and create confusion at around 9 teams. Communication grinds. • Dependencies and integration issues are magnified and create chaos. • Additional engineering solutions are necessary, necessitating enabling, integrating architectures. There is no guaranteed recipe at this scale – EVERY PROJECT IS UNIQUE.
  34. 34. 34© 1993-2015, All Rights Reserved You will need either: • A full time integration team who work above the Nexus+ helping to coordinate across each Nexus • An integration Nexus • Architecture adequate to complexity Nexus+ Integration Google runs 4,000 builds and 60 million tests every day
  35. 35. 35© 1993-2015, All Rights Reserved Organization and Architecture Adequate to Complexity • Nexuses integrate into a horizontal platform providing stability through integration standards and facilities • An Integration Nexus • Have Nexuses within boundaries that denote collaboration and unit of purpose, like product or value chain area teams • The Microsoft Component Object Model • Build your own iOS and SDK to enable app development • Product family architecture • APIs • UI Platform • Internal Open Source • Microservices
  36. 36. 36© 1993-2015, All Rights Reserved Closing Empirical Management Explored
  37. 37. 37© 1993-2015, All Rights Reserved “The future state of Scrum will no longer be called ‘Scrum’. What we now call Scrum will have become the norm, and organizations have re-invented themselves around it.” Source: Gunther Verheyen, “Scrum – A Pocket Guide (A Smart Travel Companion)”, 2013
  38. 38. 38© 1993-2015, All Rights Reserved About Gunther Verheyen • eXtreme Programming and Scrum since 2003 • Professional Scrum Trainer • Shepherding Professional Scrum at • Co-developing the Scaled Professional Scrum framework at • Author of “Scrum – A Pocket Guide (A Smart Travel Companion)” (2013) Mail Twitter @Ullizee Blog
  39. 39. 39© 1993-2015, All Rights Reserved Scaled Professional Scrum by • SPS Workshops, Professional-Scrum • Nexus Guide • Nexus Assessments • Agility Index • Agility Path, framework/agility-guide
  40. 40. 40© 1993-2015, All Rights Reserved is a community. Connect. Twitter @scrumdotorg LinkedIn /company/Scrum.or g Facebook / Forums /Community RSS
  41. 41. 41© 1993-2015, All Rights Reserved T H A N K Y O U