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8/6/2019 Cohn ADP09 Getting Agile With Scrum
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Getting Agile with Scrum
9 November 2009
Mike Cohn
Mike Cohn - background
Mountain Goat Software, LLC
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Overview of ScrumProduct backlogsSprints and sprint backlogTracking progressScrum meetings
Agenda
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The Agile Manifesto
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It shouldnt be all-or-nothing
Traditional
Scrum
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Were losing the relay race
Hirotaka Takeuchi and Ikujiro Nonaka, The
New New Product Development Game,
Harvard Business Review, January 1986.
The relay race approach to product
developmentmay conflict with the goals of
maximum speed and flexibility. Instead a
holistic or rugby approachwhere a team
tries to go the distance as a unit, passing the
ball back and forthmay better serve todays
competitive requirements.
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Scrum roles and responsibilities
Defines the features of the product, decides on release date and content Is responsible for the profitability of the product (ROI) Prioritizes features according to market value
Can change features and priority every sprint
Accepts or rejects work results
ProductOwner
Ensures that the team is fully functional and productive Enables close cooperation across all roles and functions and removes
barriers
Shields the team from external interferences Ensures that the process is followed. Participates in daily scrum, sprint
review and planning meetings
ScrumMaster
Cross-functional, seven plus/minus two members Selects the sprint backlog Has the right to do everything within the boundaries of the project
guidelines to reach the iteration goal Organizes itself and its work Demos work results to the Product OwnerTeam
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Scrum
Cancel
Gift wrap
Return
Sprint
2-4 weeks
Return
Sprint goal
Sprintbacklog
Potentially shippable
product increment
Product
backlog
CouponsGift wrap
Coupons
Cancel
24 hours
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Scrum
Is results-oriented
Is commitment-driven Is value-focused
Empowers and respects teams
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Product backlog
The requirements
A list of all desired work onthe project
Ideally expressed such thateach item has value to theusers or customers of theproduct
Prioritized by the productowner
Reprioritized at the start of
each sprint
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A sample product backlog
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User stories as backlog items
Stories are traditionally written
on note cards.May be annotated with notes,estimates, etc.
Card
Source: XP Magazine 8/30/01, Ron Jeffries.
Details behind the story comeout during conversations withproduct owner
Conversation
Acceptance tests confirm thestory was coded correctly
Confirmation
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Samples from a travel website
Use this template:
As a ,I want
so that .
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Mountain Goat Software, LLC
The product backlog iceberg
Sprint
Release
FutureReleases
Priority
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Some useful termsUser Story
A description of desired
functionality told from the
perspective of the user or
customer.
Theme
A collection of related
user stories.
Epic
A large user story.
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An example
Clearly an epic
Epics??
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An example
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A sprint backlog
Code the user interface
Code the middle tier
Test the middle tier
Write online help
Write the foo class
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Add error logging
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Potentially shippable productincrement At the end of each sprint, the team must
produce a potentially shippable productincrement
High quality, tested, complete, done, what it does it
does well
Potentially shippable shippable
Product increment may not be cohesive Print preview but no print
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Always deliver
You must have a potentially shippable productincrement at the end of each sprint
Do not miss the end of the sprint The deadline is sacred
Functionality may vary
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Sprints
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No changes during a sprint
What the team commits toand what theproduct owner agrees toduring sprint planning
should be what is delivered
We start with vague requirements Our understanding of those requirements is
refined during the sprint
However, keep in mind that...
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Abnormal terminations
If change cannot be kept out of a sprint... The sprint may be abnormally terminated
An extreme circumstance, not done very often
Raises visibility of priority changes
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Deciding to abnormally terminate
Team can abnormally terminate if
They feel they cannot meet the sprint goal Management can abnormally terminate if
Business priorities change
All work from the current sprint is undone Code reverts to where it was at the end of the prior
sprint
Next step is to plan a new sprint
After abnormally terminating...
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Release sprints Always target a potentially-shippable product
increment
But, some polishing can occur in a releasesprint
Mean Time Between Failure (MTBF) testing
Some stress, performance or usability testing
Compliance
Documentation touchups (final screen shots)
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Mountain Goat Software, LLC
A product backlogStory Points Done
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