ad27%!iterativeversusincremental: how!yourbacklogmakes ... · agile and executive coach at excella...

AD27 Product Ownership Practices 10:00 AM

AD27 -‐ Iterative versus Incremental: How Your Backlog Makes or Breaks

Agility

Presented by:

Mathias Eifert Excella

Brought to you by:

888-‐-‐-‐268-‐-‐-‐8770 ·∙·∙ 904-‐-‐-‐278-‐-‐-‐0524 -‐ [email protected] -‐ https://agiledevopswest.techwell.com/

Mathias Eifert Mathias Eifert is a Lean-‐Agile pragmatist and coach at Excella with twenty years of public and private sector consulting experience. He has helped clients to improve their teams, systems, and products by implementing Lean and Agile concepts in a variety of roles, including as an Agile Coach, Solutions Architect, and Process Improvement Engineer. Mathias helps clients discover the power of shortened feedback loops to manage uncertainty, optimize quality and customer experience, and maximize business value. He is particularly focused on coaching organizations to apply Agile and Lean principles to improve their own practices rather than relying solely on acquired process frameworks. Mathias is a frequent presenter at local user groups and conferences including Agile2017/18, AgileDC, Mile High Agile, Big Apple Scrum Day, Keep Austin Agile, Better Software West, and TriAgile.

Iterative vs. IncrementalHow Your Backlog Makes (or Breaks) Agility

Mathias Eifertexcella.com | @excellaco

excella.com | @excellaco

Mathias Eifert

Agile and Executive Coach at Excella

CSP-SM, CSP-PO, CAL 1, KMP, CLP, ICP-ATF,

ICP-ACC

Applied Lean & Agile principles for 15+ years

Process Improvement

BA / Software Developer / Solution Architect

ScrumMaster / Lean-Agile Coach

[email protected]


Incremental The word

incrementfundamentally means

add onto(Alistair Cockburn)


Incremental: The Waterfall Way

Problem Solution

WBS

Based on a whiteboard sketch by Bas Vodde


Waterfall: Cost-Value Curve

Cost

Value

Risk


Incremental: The Waterfall Way

Problem Solution

WBS



2. The Future2. Value

Two Major Sources of

Uncertainty

1. Now1. Technology


Product Owner vs. Users/Customers


Out with the old…


Incremental: The Agile Way

Problem Solution



An Incremental Success Story:v

Jail Management System

• Identified the most crucial need

• Decoupled architecture

• Beat the schedule

• Delivered standalone value


Proto-Agile: Cost-Value Curve

Cost

Value

Risk


Most of our user stories start with “As a developer…” or “As the PO…”

Anti-Pattern

They continue with “I need [some technical thing], so that I can develop.”


Incremental: The Agile Way

Problem Solution



Our Sprints arepre-planned for a long time ahead.

Anti-Pattern

There is no capacity available to fix bugs until the end.


Plan

DevOps

Water-Scrum-FallScrum


Working in iterations is not the same as working iteratively.


Iterative The word

iteratefundamentally means

re-do(Alistair Cockburn)


There are no changes to the backlog based on the previous Sprint Review.

Anti-Pattern

None of our users come to the review anyway.


"Iterative development acknowledges that we will probably get things wrong

before we get them right and that we will do things poorly before we do them well"

(Goldberg and Rubin, 1995)


“We are poor at assessing the VALUE of ideas”

Ron Kohavi and Roger Longbotham


Deming: Plan-Do-Check-Act loop

Boyd: Observe-Orient-Decide-Act loop

Scrum: Inspect and Adapt

Lean Startup: Build-Measure-Learn loop

Cynefin: Probe-Sense-Respond

IterativeLearningLoops


Feedback Loops in Scrum


Incremental

Works Best With:• Large scope

• Loosely coupled

• Stand-alone value

Benefits:• Constrain problem scope

• Deliver value early


Release 3 Release 1 Release 2

Incremental Approach


Iterative

Works Best With:• Complex problems

• High uncertainty

Benefits:• Learning reduces

uncertainty

• Validated progress

• Risk Management


Iterative Approach

Release 1


Iterative Approach

Release 1

Release 2


RiskiestAssumptionTest

RAT

What could possibly go

wrong?


http://agilemanifesto.org/


Incremental & Iterative

Problem Solution


Learning

Future


Agile: Cost-Value Curve

Cost

Value

Risk


Incremental &

Iterative

Works Best With:• Real life

Benefits:• Learn and adjust

• Solve the right problems

• Reduce risk

• Deliver value early

• Minimize the investment


1. Now2. The Future1. Technology2. Value

Agile is a wayto manageuncertainty

[email protected]

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