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by Scrum.org – Improving the Profession of Software Development

Scaled Professional Scrum

Richard HundhausenProfessional Scrum Developer

Professional Scrum Trainer

Co-creator of the Nexus

richard@accentient.com | @rhundhausen

#ScaledScrumIsStillScrum

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ProductBacklog

One Scrum team doing work

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ProductBacklog

Three Scrum teams doing work

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ProductBacklog

Nine Scrum teams doing work

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What is Scaled Scrum

Number of Products

Number of Scrum Teams

1

1

>1

>1

Scrum

Painful

Scaled Scrum

Portfolio Management

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Organizations want to scale Scrum

Great results with small initiatives of one to three teams

Desire to gain similar benefits from larger initiatives

Looking for a straightforward approach that builds on their current knowledge and skills

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The Nexus Framework from Scrum.org

Refinement

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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 Retrospective

Nexus Sprint Retrospective*

Refinement

*Nexus specific

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The Nexus Integration Team

• The Nexus Integration Team is a Scrum Team.– Accountable for overall Nexus

• Members may be full or part time.– Membership in the Nexus

Integration Team takes precedence

• Composition may change between Sprints.

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The Nexus Framework from Scrum.org

Refinement

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The Nexus Framework from Scrum.org

Refinement

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The Nexus Framework from Scrum.org

Refinement

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The Nexus Framework from Scrum.org

Refinement

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The Nexus Framework from Scrum.org

Refinement

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The Nexus Framework from Scrum.org

Refinement

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Refinement

The Nexus Framework from Scrum.org

http://nexusguide.org

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Practices and tools to scale (Nexus workshop)

• 40 Practices– Story mapping

– Cross-team refinement

– Continuous integration

– Continuous build

– Sprint backlog as TDD

– …

• ALM tooling

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Managing the Nexus

Scaled Professional Scrum

“Put all your eggs in one basket and then watch that basket.”

– Mark Twain

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Descaling – integration is too difficult, too much overhead

• Reduce the overall pace by reducing the number of teams to a more sustainable number;

• Improve use of practices and tools; and,

• Clean up and integrate the current software so it can be built upon in future Sprints.

Productivity

Teams

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The Challenge of Large Scale Development

• We have found that the Nexus starts to fray and create confusion at around 9 teams.– We have experienced this across a range of companies and

industries.

• Dependencies and integration issues are magnified and can create chaos.

• The engineering environment and architecture are then employed to standardize work and remove dependencies.

• There is no guaranteed recipe at this scale – every project is unique.

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Nexus +

Nexuses One or more Nexuses for:• Product• Product functionality• Architecture• Infrastructure

Nexus+

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Nexus+

• Integrates multiple Nexuses;

• NIT+ has product and system architects;

• Events are scheduled immediately prior to Nexus events;

• Overall or linked Product Backlogs; and,

• No Nexus+ Sprint Backlog.

Nexus+

Nexuses

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Next Steps

• Scaling Workshops - http://bit.ly/1JJW9KF

• Nexus Guide - http://bit.ly/1i6zjHs

• Nexus Assessments - http://bit.ly/1M6olcg