User stories are a powerful technique agile teams used to communicate requirements. Yet all too often, the stories are poorly written or even incomprehensible. Some stories are too big and overlap across delivery cycles. Others are too small and don’t deliver sufficient details for developers. Join Paul Reed to learn the Seven Product Dimensions—the 7 D’s—which yield “just right” stories that users and product owners can write and developers can understand. Explore and experience the Seven Dimensions: user, interface, action, data, control, quality, and environment. Learn to identify options for high value business and user needs, and then assemble them into cohesive user stories. As you slice the options, you’ll see ways to leverage analysis models to quickly visualize and discuss options. Practice employing structured conversations about user stories to engage customers while taking business and technology perspectives into consideration. Find out how to establish acceptance criteria based on the value considerations to make your stories more valuable. Leave with a practical framework for writing “just right” stories.
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User Stories: Across the Seven Product Dimensions
1.
TH
Half‐day Tutorial
6/4/2013 8:30 AM
"The Flow of the
Agile Business Analyst"
Presented by:
Steve Adolph
WSA Consulting, Inc.
Brought to you by:
340 Corporate Way, Suite 300, Orange Park, FL 32073
888‐268‐8770 ∙ 904‐278‐0524 ∙ sqeinfo@sqe.com ∙ www.sqe.com
2. Steve Adolph
WSA Consulting, Inc.
An agile coach with WSA Consulting, Inc., Steve Adolph partners with Scaled Agile and Rally
Software where he pursues his passion for helping organizations get the job done. He has been
creating and managing software development projects long enough to remember Fortran and
OS/MVT JCL. Steve’s professional career includes many exciting and critical projects—
designing call processing software for digital telephone exchanges, design and development of
leading edge network management systems, railway signaling, and telecom billing. He has
diverse experience in job roles ranging from developer to chief engineer to CTO. Steve is
coauthor of the popular book, Patterns for Effective Use Cases.
3. The Flow of the
Agile Business
Analyst
Steve Adolph
Photo by K. W. Sanders
Intros
Form into a group at your table of 4 to 7 people and
interview each other…
What is their job role?
What is their agile experience (1‐5)?
What do they like to do outside of work?
What is one question they want answered during
this workshop? Record this on a post‐it note.
5. As a group, summarize your findings.
5 As a group summarize your findings
1.
2.
3.
4.
Be prepared to present your findings.
7. Manifesto for Agile Software Development
We are uncovering better ways of developing software by
doing it and helping others do it. Through this work we have
come to value:
Individuals and interactions over processes and
tools Working software over comprehensive
documentation Customer collaboration over
contract negotiation Responding to change over
following a plan
That is, while there is value in the items on the right, we
value the items on the left more.
9
Much More than an Umbrella
Photo by Adry
13. Flow
Vision
$
$
Light Weight
Development Process
Budget
Product Owner
Backlog of Items
Team
F
e
a
t
u
r
e
F
e
a
t
u
r
e
Potentially Shippable
Product Increment
21
Flow
Vision
$
Light Weight
Development Process
Budget
Product Owner
Backlog of Items
22
Team
F
e
a
t
u
r
e
F
e
a
t
u
r
e
F
e
a
t
u
r
e
Potentially Shippable
Product Increment
14. Flow
Vision
Light Weight
Development Process
Budget
Product Owner
Backlog of Items
Team
F
e
a
t
u
r
e
F
e
a
t
u
r
e
F
e
a
t
u
r
e
F
e
a
t
u
r
e
Potentially Shippable
Product Increment
23
Flow
Vision
Minimal WIP
Max Finished
Product
Budget
Product Owner
Light Weight
Development Process
Backlog of Items
Team
F F
e e
Min a
a
t t
u u
r r
e e
F
e
a
t
u
r
e
F
e
a
t
u
r
e
Potentially Shippable
Product Increment
15. Large Versus Small Batch
“Most fail to recognize both the critical relation
between batch size and cycle time, and the
critical relationship between batch size and
feedback speed”
p
Don Reinertsen, The Principles of Product
Development Flow
The Problem with Stage Gates
and Phases
Analysis
Design
The work product being
transferred from one phase to
another is 100% of the work
product of the previous phase
phase.
This is maximum theoretical batch
size and will result in maximum
theoretical cycle time …
Don Reinertsen, The Principles of Product Development Flow
Implement
Test
16. When it comes to flow…
How can we reduce software
development b t h size?
d
l
t batch i ?
What role (if any) does the
Business Analyst play?
Does Agility
g y
Obsolete
the BA
Role?
19. “The hardest part
of building any
software software
system is
system is
determining
precisely what to
build” – Frederick
Brooks
Photo by Lildude
What the BA Brings
Areas of Knowledge
Enterprise Analysis
p
y
Requirements Planning and
Management
Requirements Elicitation
Requirements Analysis and
Documentation
Requirements Communication
Solution Assessment and Validation
Skills
Communications
Facilitation
Domain Knowledge
Analysis
Photo by Gioia De Antoniis
27. User Stories:
The Early Days
Photo by Patti Gravel
USER STORIES*
Captures something valuable
Fits into one sprint
Fits into one sprint
(Could) fit on a 3x5 note card
Annotate with notes, and estimates
Details come from conversations with
Product Owner
Product Owner
Acceptance tests confirm story was coded
correctly
Photo by Improve it
* Original definition of a user story
28. As a <who>,
I want to <what>,
so that <why>.
As a traveler,
I want to be able to cancel a
reservation in one move, so
that all the details can
handled.
32. CARD
CONVERSATION
CO
CONFIRMATION
O
As a traveler, I want to be able to cancel a
reservation in one move, so that all the details can
handled.
handled
Acceptance Criteria:
Cancel res for hotel, car, plane,
train
Charge 10% fee
Confirmation email
34. User Stories:
The Modern Era
Photo by Brad Smith
What if the story doesn’t fit
into the sprint?
Product Backlog
Book Travel
Set Travel
Policy
Generate Backlog
Sprint
Expense
Report
Sprint Backlog
35. …Or what if you are building
this?
Product Backlog
Epics
Book Travel
Set Travel
Policy
Backlog Item
Generate
Expense
Report
UML Model
Courtesy Dean
Leffingwell
Epic
Realized by
0,1
1..*
Story
39. Principles for Creating a Steady
Flow of Sprintable Stories
Far out on
the
Roadmap
Next
N t
Release
Current
Release
Five Principles For the Agile BA
1. Open the Channels
2. Chart the Flow
3. Generate Flow
4. Lean out the Flow
5. Bridge the Flow
Photo by Gioia De Antoni
45. Opening the Channels
In your groups discuss the following questions:
1. What are the channels both formal and informal that
are available to you for engaging both business and
engineering stake holders?
2. What organizational enablers exist that help keep
those channels open?
3. What organizational barriers (if any ) are there to
keeping those channels open?
4. What changes do you or your group have sufficient
influence to make that could open new channels or
would improve the flow of existing channels?
Summarize your findings and be prepared to report your
answers as a group.
Principle #2
Chart the Flow
Photo by Chris Seward
46. Multi Level Planning
Vision
Release 1
ITERATION 1
Task 1
4 hours
Release 2
ITERATION 2
ITERATION 3
Task 2
6 hours
Release 3
ITERATION 4
Task 3
2 hours
Task 4
8 hours
Photo by Matthias Werner
Vision – A Star to Steer By
True North*: Why are we building this?
Broad statement of project’s value
Create Alignment
Reasonably stable over 6 months to a year
*Dennis Pascal: Getting the Right Things Done
Photo by Charles Dawley
Task 5
2 hours
47. “For (customer), who (statement of need),
the (product name) is a
(product category) that
(key benefit, compelling reason to buy). Unlike
(primary competitor), our product
( i
tit )
d t
(statement of primary differentiation).”
Photo by Alexandar Boden
The Elevator
Statement
A Vision Tool:
The Product Box
Design box for the software
Name, Logo, Description, Key
Selling point on front
3-6 points to key differentiators
or compelling reasons to buy on
the back
48. The Roadmap
Define Dates and Milestones
Define Dates and Milestones
Set High Level Themes
Product Evolution over time
Photo by Michael_P
9
1
A Release
Release date
Driven by events
Defined release train schedule
Release Name and Objective
Internal delivery to a platform, other
team, or release train
Distribution to Production
Theme
Compelling reason to buy
New and primary product
differentiation
Significant business value to the
organization
Planned feature set
High-level descriptions of system
services that deliver value to the
user/customer
8/31/10
8/31/10
Release 1
Proof
Th
P
Theme: Prove “?”
For X, this Proof release
provides <what value>
Key Features:
1. Feature A
1
2. Feature B
3. Feature C
49. A Roadmap of Releases
Vision
8/31/11
8/31/11
10/30/11
10/30/11
1/?/12
1/?/12
3/?/12
3/?/12
R l
Release 1
Proof
Release 2
R l
Alpha
R l
Release 3
Beta
Release 4
R l
GA 1.0
Theme: Prove “?”
For X, this Proof release
provides <what value>
Key Features:
1. Feature A
2. Feature B
3. Feature C
Theme: Trial with critical
existing customers
For <who>, this Alpha
release provides <what
value>
Key Features:
4. Feature B’
5. Feature C’
6. Feature D
Principle #3
Generate Flow
Photo by Eric Begin
Theme: Upgrade Alpha
and expand to new
customers
For <who>, this Beta
release provides <what
value>
Key Features:
7. Feature B’’
8. Feature D’
9. Feature E
Theme: General
Availability
For <who>, this GA release
provides <what value>
Key Features:
10. Feature F
11. Feature G
51. Models and Model Usage
What models are you using?
Take 5 minutes to interview someone not seated in
your group:
1. What models do they use?
2. What aspects of the problem domain do the
models reveal?
3. Do they find the models useful?
4. What problems (if any) have they encountered
with the models?
Be prepared to present your findings
Photo by Jason Coleman
Model Driven User Stories
Upgrade Seat
Actor: Traveler: Ticketed passenger
Main Success Scenario
1. Traveler enters her account code for the flight and requests a
seat upgrade.
2.The system verifies the traveler is eligible for upgrade.
3. The system verifies there are seats available for upgrading.
As a traveler….
As a traveler I
Upgrade
want to upgrade
my seat… S t
t Seat
Traveler
4. The system upgrades the Traveler seat assignment, and the
appropriate upgrade certificates are removed from the Traveler’s
account.
5. The system issues an upgrade receipt to the Traveler.
Alternatives
1a: Traveler is a frequent flier
1a.1 The system displays her current mileage and recent flight
activity.
As a traveler I
want to see my
current status
3a: Traveler d
3 T
l does not h
t have enough upgrade certificates
h
d
tifi t
3a.1 Traveler purchases additional upgrade certificates.
Business Rules
Upgrade Eligibility
Platinum frequent flyers may request an upgrade 72 hours prior to
departure.
Gold frequent flyers may request an upgrade 24 hours prior to
departure.
Silver frequent flyers are not eligible for upgrades
As a traveler I want
to purchase
upgrade
certificates.
52. Split Along Acceptance Criteria
As a traveler, I want to be able to cancel a
reservation i one move, so th t all the
ti in
that ll th
details can handled.
Acceptance Criteria:
Cancel res for hotel, car, plane
Charge 10% fee
Confirmation email
Cancel res for hotel, car, plane
As a traveler, I want to be able to cancel my
reservations f a hotel, car, and plane i one
ti
for h t l
d l
in
move so all details are handled.
Acceptance Criteria:
plane reservation is canceled
Hotel reservation is canceled
Car reservation is canceled
53. Plane Reservation is Cancelled
As a traveler, I want to be able to cancel my
traveler
plane reservation in one move so all details
are handled.
Acceptance Criteria:
Cancelation request is sent to airline
Confirmation received from airline
reservation is canceled
Low‐Fidelity/High Fidelity
Photo by Vanessa Arn
Photo by Alberto Cardona
54. Bill Wake’s 20 Ways to Split a Story:
1 through 9 the “Big Picture”
Consider First
Defer / Later
Explanation
Research
Implement
What have others done?
Spike
k
Implement
l
Explore a quick solution
l
k l
Manual
Automated
Often have to retain manual solution anyway
Buy
Build
Trade cost of customizing….
Build
Buy
….versus cost of implementing yourself
Single User
Multi – User
Fewer worries about scale, user accounts.
API only
User Interface
Test may function without UI
Character or Script GUI
UI
Simple interface can prove out ideas
Generic UI
Naked objects approach can be cheaper
Custom UI
- http://xp123.com/articles/twenty-ways-to-split-stories/
Bill Wake’s 20 Ways to Split a Story:
10 through 16 the “ilities”
Consider First
Defer / Later
Explanation
Static
Dynamic
Do once and ignore updates
Ignore Errors
Handle Errors
dl
Minimize Error codes (don’t ignore exceptions)
d d
Transient
Persistent
Focus on behaviour over persistence
Low Fidelity
High Fidelity
Quality of result (e.g. pixel depth)
Unreliable
Reliable
“Perfect uptime is very expensive” Wm Pietri
Small Scale
Large Scale
Build load capacity over time
Less “ilities”
More “ilities”
Address NFRs later
- http://xp123.com/articles/twenty-ways-to-split-stories/
56. How are you generating flow?
In your groups discuss the following topics
1.
1 What ceremonies do you have that generate flow?
2. What are the impediments to generating a flow of
sprintable stories?
3. What changes do you have influence to make that can
overcome these impediments and improve flow?
Be prepared to share your conclusions
conclusions.
Principle 4
“Lean out the Flow”
Craig Kohtz
59. Agility, Queues and Little’s Law
Wq - queue time for average jjob
q
g
Wq =
Lq
Lq - queue length
λ
λ
average processing
rate
Reducing Queue
Time: Increase λ
I can take a
story
We’re really
getting
swamped here.
Yeah so can
Y h
I
The self organizing
team.
Photo from Nearsoft
Me too…
60. Reducing Queue Time:
Limit Queue Length (Lq)
We have over 300 10
items in our backlog
and we’re delivering
about 5 items each
sprint…..
Photo by Pennybinary
Decreasing Lq Queue Length:
Shape of a well groomed Backlog
62. Decreasing Lq Queue Length:
Multi Level Planning and the Groomed Backlog
Future Release
Next Release
Current Release
Reducing Queue Length:
Backlog Policy and Well Groomed Backlog(s)
Portfolio Backlog:
Epics representing large initiatives
Feature Backlog:
Features for
Next Release
Team Backlog:
Current Release
69. Photo by Mroach
Optimize the
Stage Gate
Eliminate, Lighten, or
Optimize Documentation
Photo by Jules Holleboom
70. Cultivate Allies
Photo by Andy Doro
Reverse Engineer Governance
Work Products
Upgrade Seat
Actor: Traveler: Ticketed passenger
Main Success Scenario
1. Traveler enters her account code for the flight and requests a
seat upgrade.
2.The system verifies the traveler is eligible for upgrade.
3. The system verifies there are seats available for upgrading.
4. The system upgrades the Traveler seat assignment, and the
appropriate upgrade certificates are removed from the Traveler’s
account.
5. The system issues an upgrade receipt to the Traveler.
Alternatives
1a: Traveler is a frequent flier
1a.1 The system displays her current mileage and recent flight
activity.
activity
3a: Traveler does not have enough upgrade certificates
3a.1 Traveler purchases additional upgrade certificates.
Business Rules
Upgrade Eligibility
Platinum frequent flyers may request an upgrade 72 hours prior to
departure.
Gold frequent flyers may request an upgrade 24 hours prior to
departure.
Silver frequent flyers are not eligible for upgrades
71. Working in your groups, discuss the following
questions for Bridging the Flow:
In terms of stage gates and documentation and rapid
feedback
f db k cycles:
l
1. Which stage gates and documents are relevant
(e.g. actually used, or necessary)?
2. Which are required by outside regulatory agency?
3. Which could be eliminated altogether?
4. Which could potentially be, optimized, or
lightened?
li ht
d?
5. Which gate keepers can you engage as allies?
Be prepared to report out your answers (and questions)
The Flow of
the Agile BA
72. Where is the
BA?
Scrum Master
Product Owner
Photo by Gavin White
Photo by Greg Peverill-Cont
?
Delivery Team
Photo by Reinhold Behringer
Use “small
batches” to
deliver a steady
d li
t d
flow of value
Product
Increment