Slicing and dicing your user stories

by Jenny Wong on Jul 01, 2011

1,549 views

This was a talk given by Jenny Wong and Danilo Sato at Agile Brazil 2011: ...

This was a talk given by Jenny Wong and Danilo Sato at Agile Brazil 2011:

Agile teams learned that splitting teams into silos and functional areas is not a productive way to develop software. Having cross-functional teams improve collaboration and enables delivery of value faster. The same arguments can be applied to user stories. The way in which business requirements and features are translated into user stories play an important role on the software delivery process. This session will discuss the benefits of working with small user stories, and present different ways to split requirements into user stories.

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Slicing and dicing your user stories — Presentation Transcript

Slicing and dicing your user storiesJenny Wong ● Danilo Sato morphblade

Why are we here?

Why are we here? As Pedro the product owner, I want to build the system, so that I can have the system As David the developer, I want to migrate the db

Why are we here?

Why are we here? “As product owner, I want to understand how this may help me do planning”

Why are we here? “As product owner, I want to understand how this may help me do planning” “As a developer, I want to have the tools to explain what we are doing”

Why are we here? “As product owner, I want to understand how this may help me do planning” “As a developer, I want to have the tools to explain what we are doing”“As an analyst, I want to learn how to split big chunks into smaller chunks”

What is the real need in slicing and dicing?

Why One Big Chunk does not work LAUNCH

Why One Big Chunk does not work LAUNCHFEEDBACK

Why One Big Chunk does not work

What are the incorrect ways of splitting?STORY Too Big, too small Independent, Negotiable, Value, Estimable, Small, Testable

What are the incorrect ways of splitting? MIGRATE OLD SPLIT DATABASE DATA Not user driven REWRITE REFACTOR ARCHITECTURE JQUERY Independent, Negotiable, Value, Estimable, Small, Testable

What are the incorrect ways of splitting? LOG IN USER PROFILE HOMEPAGE Split per page ACCOUNT SETTINGS Independent, Negotiable, Value, Estimable, Small, Testable

Busting Urban Myths

Busting Urban Myths✤ “Splitting stories result in larger estimates on the feature”

Busting Urban Myths✤ “Splitting stories result in larger estimates on the feature”✤ “Takes longer to develop”

Busting Urban Myths✤ “Splitting stories result in larger estimates on the feature”✤ “Takes longer to develop”✤ “I just see incomplete features”

Busting Urban Myths✤ “Splitting stories result in larger estimates on the feature”✤ “Takes longer to develop”✤ “I just see incomplete features”✤ “Customers will never buy”

See it in Action!

✤ a running timeline that scrolls in chronological order✤ the ability to distinguish types of event✤ get the data for all genres✤ user can select a genre✤ hover to view detail of event✤ click to view related article on website✤ look and feel, navigation, labels, colours & artistic direction✤ legend to show types of event

Horizontal thinking ... COLOURS LOOK & FEEL PRESENTATION DATA ARCHITECTURE

Does horizontal slicing deliver?

Vertical vs. Horizontal Slicing COLOURS SHOW ALL GENRES SHOW EVENT TYPE SHOW ONE GENRE LINK TO ARTICLE LOOK & FEEL TIMELINE PRESENTATION DATA ARCHITECTUREThe application is split in way that each story can deliver value individually

Does vertical slicing deliver?

Dimensions of splitting

✤ Business value✤ Risky items✤ Data dependency✤ User interaction and interface✤ Technical implementation, constraints and complexity✤ Stakeholders

Slicing and Dicing

If timeline interaction was most important ✤ Play timeline story ﬁrst, to test interaction from design ✤ Lightweight Prototyping? ✤ How about a lightweight spike with dummy data?

Different event types ✤ Different event types have equal priority? ✤ Is all data available for all genres?

If data for a genre is incomplete ✤ Need to ﬁx data for Jazz genre before it can be added to the data ✤ Showcase one other genre ﬁrst, then add the rest, then add when it is complete ✤ Other genres remain testable. Could we release without Jazz?

Detailed vs. Overview ✤ A little bit of everything? ✤ Or everything in one genre? ✤ A way to release a functional application with incomplete data, whilst allowing enhancements

If the user interface was challenged ✤ Lab test interaction ✤ Easy to get lost in timeline ✤ Solve problem by adding a date at the bottom ✤ Proceed development, which may be relatively painless. Think of consequences if we only found out MUCH later...

Pivoting business direction? ✤ Generate user trafﬁc? ✤ Sell music? ✤ “UGC”?

Pivoting business direction? ✤ Generate user trafﬁc? ✤ Sell music? BUY ✤ “UGC”?

Putting iterative development in perspective

Release planning of ers keep track Help p roduct own split stories

Feature matrix

Feature matrix 75% 60% 85%50% 55% 80% 100% 100% 75% 75%

Product management: story mapping time ves over time & How p roduct evol es prior itise featur

Product management: story mapping Id eas times oal G Sto ries ves over time & How p roduct evol es prior itise featur

Product management: story mapping time ves over time & How p roduct evol es prior itise featur

Product management: story mapping✔ ✗ ✔ ✔ ✔ ✔✔ ✗ ✗ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✗ time✔ ✗ ✔ ✗ ✔ ✔ ✔ ✗ ✔✔ ✔ ✔ ✔ ✔ ✔ ✗ ves over time & How p roduct evol es prior itise featur

Our learning journey✤ Beneﬁts of splitting✤ Engineer the power and affordability to change - and change again✤ Keeping track

Questions & Answers

Obrigada!

Jenny Wong @jenny_wongDanilo Sato @dtsato

Slicing and dicing your user stories

by Jenny Wong on Jul 01, 2011

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Slicing and dicing your user stories — Presentation Transcript