Vertical slicing patterns

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Vertical Slicing

patterns.

SPIDER Vertical Slicing
Start with a more simple version of that feature.
COMPONENT
COMPONENT
COMPONENT
COMPONENT
FEATURE
*Adapted from SPIDR (Mike Cohn)

Spikes
A research activity that can give you the information needed to understand the size of a functionality.
We can use this strategy when we have no experience or understanding on how to build a particular feature, and getting the needed information presumably
requires a high degree of effort. This, can be due to the decision of including or trying out a new technology as well as to the lack of experience within a functional
area. A Spike is a defined amount of work dedicated to the investigation and a basic implementation of a solution needed to complete another feature
.

As a service provider

I want to get a notification in my iOs phone

So that I understand a reservation has been completed
Spike (Investigate how to send iOs notifications):

As a service provider

I want to get a notification in my iPhone 12

So that I understand a reservation has been completed
Spike
Defer error handling/logging Dummy then dynamic
* Even though we can’t call it Spikes, as a last resource, is also possible to defer the inclusion of specific
components in order to distribute complexity in different iterations
.

As a electric substation technician

I want to see the Voltage Monitoring Table of a substation

So that I can detect voltage violations

I want to see a Dummy violation in Voltage Monitoring Table

So that I can visualize the severity and parameters

I want to see the Voltage Monitoring Table of a substation

So that I can detect voltage violations
As a technician

I want to see the status of a network node

So that I can troubleshoot the device
As a technician

I want to know when a network node encountered errors

So that I can proactively troubleshoot network devices
As a technician

I want to see the logs of a network node

So that I can troubleshoot a faulty device

Paths
A user can do something in multiple ways, or continue in different directions.
As an on-line shop customer

I want to complete and pay my order

So that I can get my food delivered

I want to complete my order

So that I can confirm the food to deliver

I want to pay with credit card

Split conditions

I want to create an order

So that I can get my shoes delivered

I want to buy a pair of shoes

So that I can get them delivered

I want to save a pair of shoes

So that I can buy them later
Use Case variations

I want to add a pair of shoes to my shopping cart

So that I can include them in my order
As a category manager

I want to manage the products

So that I distribute the available stock

I want to create a product type

So that can start de distribution

I want to list the product types

So that can check product availability
Operations

I want to update a product type

So that I can change product details

I want to archive a product type

So that can stop distributing it
Actions
As a player

I want to operate my character

So that shoot & scape from other characters
As a player

I want mi character to shoot

So that I can damage other characters
As a player

I want mi character to change weapon

So that I can select my preferred weapon
As a player

I want mi character to walk

So that I can move my character
As a player

I want mi character to run & jump

So that I can move my character faster

Interfaces
The user interaction and/or information displayed happens in different: browsers, hardware, level of complexity…
Zero, one, many Basic to advanced Mayor effort
As virtual card user

I want to see the cards linked to my account

So that I can verify their availability

I want to see 0 cards linked to my account

So that I can verify no payments can be done

I want to see 1 Visa card linked to my account

So that I can verify that I have a card available

I want to see 2 Visa and 2 Mastercard Cards
linked to my account

So that I can verify I have 4 cards available

I want to see my past orders

So that I can repeat a previous order

I want to see the last order

So that I can repeat the last order

I want to see the last products bought

So that I can buy again some of the
product bought in the last 3 months

I want to see the last products bought
and the updated prices

So that I can buy again some good offers
bought in the last 3 months

I want to pay my order with credit card

So that my order is sent

I want to pay my order with VISA


I want to pay my order with AMEX , DC or MC

Interface variations
As a market analyst

I want to check the statistics for one product

So that I can define the strategy for next quarter
As a market analyst

I want to see a summary report

So that I can get a market overview
As a market analyst

I want to export statistic data to CSV

So that I can process data in MS Excel
As a market analyst

I want to export statistic data to PDF

So that I can send them by email
As a market analyst

I want to print a summary report

So that I can had it out in a meeting

Data
Deliver value in different iterations by focusing in different data types or a sub-range of the relevant data.
Variations in Data
As a tourist

I want to see tourist information for this city

So that I can prepare my visit
As a tourist

I want to see museums information for this city

So that I can include museums in my visit
As a tourist

I want to see monuments information for this city

So that I can include monuments in my visit
As a tourist

I want to see restaurant information for this city

So that I can include restaurants in my visit
As a tourist

I want to see parks information for this city

So that I can include parks in my visit
Data Boundaries
As a tourist

I want to see a museum name and description

So that I can see if it’s interesting for me
As a tourist

I want to see a museum information

So that I can decide to include it in my visit
As a tourist

I want to see a museum address

So that I can see how far is it from my location
As a tourist

I want to see a museum schedule & availability

So that I can see if I can include it in my visit
As a tourist

I want to see a museum current expositions

So that I can see if it’s interesting for me
Transient then persistent
As a cinema viewer

I want to pay a ticket

So that I don’t need to wait in the line
As a As a cinema viewer

I want input my credit card details

So that I can pay a ticket
As a registered cinema viewer

I want my credit card details to be stored

So that I can purchase tickets directly
As a Bank customer

I want to request a mortgage

So that I can buy a new house
As a Bank customer

I want to Send my personal Data

So that the Bank can confirm my Identity
Workflow breakdown
As a Bank customer

I want to Send my financial Data

So that my creditworthiness is confirmed
As a Bank customer

I want to Send the property Data

So that the mortgage feasibility is studied
As a Bank customer

I want to Send my last tax declaration

So that my financials are verified

Extensions
Extend system capabilities in further iterations.
Input validation
As a used car dealer

I want to input the vehicle data

So that I can close the sale

I want the licence plate to be verified

So that I correctly register the vehicle

I want the buyer’s ID number to be verified

So that I ensure there are no legal issues

I want the frame number to be verified


I want the buyer’s driving license verified

System qualities Manual/Automated
Low/high fidelity
As a bank customer

I want to see my overall position

So that I have an overview of my products
As a bank customer

I want to see my overall position

As a bank customer

I want to see my overall position in an iPhone
12 within 3 seconds and with no scroll

As a bank customer

I want to see my transactions

So that I have an overview of my expenses
As a bank customer

I want to see a list of transactions

So that I have an overview of my expenses
As a bank customer

I want to see my transactions in columns by type

So that I have structured view of my expenses
As a bank customer

I want to see a categorized list of transactions

So that I have an view of my expenses by type
As a pharmacist

I want to get a package of Aspirin

So that I can sell it to a customer
As a pharmacist

I want to get the storage location of Aspirin

So that I can find and sell it to a customer
As a pharmacist

I want to the robot to find & deliver Aspirin

So that I can sell it to a customer

Rules
Support different business rules in different iterations.
Platform options Roles
Business Rules
As an investor with configured price checks

I want to receive notifications

So that I’m updated about relevant changes

I want to receive notifications in my iPhone

So that I’m updated on the go

I want to receive notifications in my Android dev.

So that I’m updated on the go

I want to receive notifications in my Desktop

So that I’m updated while working

I want to receive notifications in my iPad

So that I’m updated while reading the news
As a policy holder

I want to issue a claim

So that I can get my car repaired
As a policy holder

I want to issue a claim under 200EUR

So that I can get a refund
As a policy holder

I want to issue a claim over 200EUR

So that the insurance expert can evaluate
the damage
As an operator

I want see a customer’s insurance policy

So that I can understand the policy details
As an insurance Broker


So that I can understand the conditions
As an insurance Agent


So that I can understand the prices
As an insurance Underwriter


So that I can analyse the risks
As an insurance Claimant


So that I can analyse the exclusions
Acceptance criteria
As a bank customer

I want to request a 50k loan

So that I can buy a used car
As a customer with pre-approved credit

I want to activate my 50k loan

So that I can buy a used car
As a customer with no pre-approved credit

I want to be informed about the process

So that I can request a 50k loan
As a customer with debt risk

I want to be informed of my debts

So that I don’t request a loan

Examples of incorrect Vertical Slicing

What is NOT Vertical Slicing
Dividing by components, task, responsibilities or any kind non deliverable pieces of work.
COMPONENT
COMPONENT
COMPONENT
COMPONENT


Input payment data
Steps
Payment denied
Validate credit card information
Send request to payment gateway
Verify response to payment gateway
Confirm payment
Update shopping cart
Issue order


Create the payment form
Tasks
Create declined payment view
Create validation helper
Create payment gateway interface
Empty shopping cart
Save new order
Create payment service


Front-end Development
Responsibilities
Back end Development
Integration
Testing
Deployment
Create confirmed payment view


Data entry view
Components
Payment response view
Validation helper
Payment gateway interface
Shopping cart
Data access / ORM
DDBB
FEATURE
Acceptance test
Create automated test
Payment service

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Vertical slicing patterns

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