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Steering the Northwest Passage Beginning an SOA Initiative
Ian Robinson, ThoughtWorks
http://iansrobinson.com
Overview
- Where to Start?
- Stories and Capabilities
- Services and Contracts
- Delivery
Steering the Northwest Passage Beginning an SOA Initiative Ian - - PowerPoint PPT Presentation
Steering the Northwest Passage Beginning an SOA Initiative Ian - - PowerPoint PPT Presentation
Steering the Northwest Passage Beginning an SOA Initiative Ian Robinson, ThoughtWorks http://iansrobinson.com Overview Where to Start? Stories and Capabilities Services and Contracts Delivery Where to Start? Becketts Dilemma
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Where to Start?
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Beckett’s Dilemma
Client: Midstream oil and gas
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A Map of the Territory
Who? What For? Why? What? How?
Stakeholders Outcomes Benefits Forces Obstacles Capabilities Processes Technologies want deliver motivate prevent realise implemented by automate People provide
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Stories, Capabilities, Services and Contracts
Stories Capabilities Services Contracts
Describe goals & outcomes Resources to realise
- utcomes
Host capabilities Assert interactions between services
What How
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Stories and Capabilities
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Communication Barriers
Business
Folk IT
IT
Business Process Disorder
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People Change, Processes Change, Technologies Change…
How What
Source spare parts
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Questions, Questions…
How (well) do you implement this capability today? Is it core to your business? Does it differentiate you from your competitors? Who’s responsible for its execution when systems fail?
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User Stories
As a <role> I want <feature> So that <benefit>
Value
Outcomes
Outside‐in External behaviour
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Role Value Story Outcome Capability
Features: Outcomes and Capabilities
Feature
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Outcome‐Focused Stories
As a <role> I want <outcome> So that <benefit>
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Responsibility‐Focused Stories
As <role> I am responsible for <outcome>, Which delivers <benefit>
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Business Entity Domain Model
Client: Financial services
party application form address account position policy tax region id account portfolio
Trade financial markets Process application Manage customer
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The Entity Lifecycle
p r e − l e a d l e a d a p p l i c a n t n e w a c t i v e d
- r
m a n t c l
- s
e d d e b t
- r
q u a l i f i e s s e l f a p p l i e s a c c e p t e d t r a d e s
Client: Financial services
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Capability Map
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Capability Map
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Capability Map
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Capabilities Drive the Entity Lifecycle
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“Once more, with feeling!”
Client: Midstream oil and gas
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“Aha!”
Client: Midstream oil and gas Move production Transform production
Crude connected to terminal Diluent connected to terminal Lab analysis complete
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Services and Contracts
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Three‐Layered Architecture
Business Presenta,on Data
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And Now: At Distributed Proportions!
Ac,vity Process En,ty
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Services Host Capabilities
Capabilties Activities Activities compose Capabilties implemented by compose
Process integrity Composability
new EnterpriseApplication() f() f() f() f() f()
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Treat Services as Consumers
As order management I want to know when a product has changed So that I can fulfill orders based on current offerings
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Events Satisfy Consumer Expectations
Product Management Regional Distribution Order Management Inventory Product Updated Product Updated Product Updated
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Communicate Consumer Contracts
Consumer‐Driven Contract Consumer Contract Consumer Contract Provider Contract adopt adopt communicate communicate
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Delivery
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Continuous Planning
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Capability Delivery
Long‐lived capability delivery teams Visiting projects contribute capital and resource
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Multiple Delivery Streams
Client: Communications and entertainment
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Thank you
http://iansrobinson.com