agile teams - dataföreningen kompetens · 2015-06-01 · agile & lean agile principles...
TRANSCRIPT
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Agile Teams and
Architecture
Tommy Ågren
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Some guiding
values and principles
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What is Lean and Agile?
A set of Values and Principles
– That have proven to work!
Lean: Toyota (manufacturing & production)
Agile: Software lightweight methods
2001 Agile Manifesto
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Adopting Lean & Agile
Practices, how to do it Processes, Organization, Methods and Tools
Benefits and Why Wanted business effects!
Values and Principles Principles that govern the wanted effects
Creates context and alignment
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Try out, learn
and Adapt
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Agile & Lean
Agile principles
– Continuous attention to technical excellence and good
design enhances agility
– The best architectures, requirements, and design solutions
emerge from self-organizing teams
– Simplicity is essential
Lean Software principles – Build Integrity in (system integrity and quality)
– No defects!
– The system should function as a cohesive unit
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Architecture
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Agile Teams
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Self-organizing (within a context)
Cross-functional
Long living
Responsible for the result
5-9 members
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Roles, Skills and Responsibility
Want to avoid static and
appointed responsibilities!
Want to grow knowledge and skills,
favor collaboration and coach
team members to that take
responsibility for ”the whole”
I’m the Tester
I’m the Java Developer
I’m the Designer
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An Agile Architect ?
A person highly skilled in architecture work
Works in, or close with, an Agile Development Team
Embraces the Agile/Lean values and principles • Collaborates with and coaches team members
• Acknowledges and empowers people
• Communicates architecture and decisions (face-to-face)
• Accepts and adapts to ideas from others
• Keeps things simple - travels light!
• Embraces and manages change!
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An Agile Architecture ?
Supports Agile Development! • Makes the system easy to understand, maintain and
build upon
• Reduce system complexity
• Makes the system easy to test, integrate and deploy
• Supports change
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Examples of Architecture
Requirements (Quality Attributes)
Structural • Modularity
• Maintainability
• Portability
• Reusability
• Integrability
• Testability
• …
Run-time • Performance
• Interoperability
• Scalability
• Reliability
• Availability
• Security
• Safety
• Usability
• … Architectural • Conceptual Integrity
• Correctness and completeness
• …
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Agile friendly Architecture
Requirements (QAs), examples
• Modularity
• Maintainability
• Testability
• Integrability
• Conceptual Integrity
• Scaled development
• Interoperability
• Usability (UX)
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Product and Anatomy (meta model)
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Marketable
“Product/Service” seen from the
Customer perspective
The ”product anatomy/structure” seen as a set
of modules/components/systems/services
A working
potentially releasable
increment
Requirements are described
as customer-oriented
Features
Customers /
Stakeholders
Feature
Feature
Feature
Feature
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Smaller organization
One or few independent teams
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A cross-functional and self-organizing
Development Team
• The knowledge and the skills needed to build increments of
the end-product, can be captured by one single team
• The team can take responsibility for architecture work
Feature
Feature
Feature
Feature
Feature
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working releasable
increment of the product
(Customer perspective)
Smaller organization,
one Development Team
pull
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Include Architecture work
in the process events
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Daily Scrum
Sprint Review (demo)
Retrospective
Backlog Management
and Preparation
Sprint Planning
Feature
Feature
Feature
Example: Scrum
Development Team
Feature
Definition
of Done SAD
Feature
QAs
Arch.
Arch.
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Feature and Component Teams
two Development Team stereotypes
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• End-to-End oriented ‒ Take on (pull) customer-oriented Features, and produce
working product increments
• Highly cross-functional – Able to work across the product structure
– Develop, integrate and deploy “components” independently of other teams
Feature Teams
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Feature
Working product
increment
Feature
Feature Team
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Feature Teams
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Feature
Working product
increment
Feature
Feature Team
Address Solution Architecture
+ Realize customer-oriented requirement
+ See to solution consistency
+ Integration, Acceptance Testing and Deployment
+ Address architecture requirements/qualities on solution level
‒ Performance
‒ Communication mechanisms
‒ Availability (overall fault detection and recovery)
‒ Scalability (solution level)
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Feature Teams
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Feature
Working product
increment
Feature
Feature Team
! Usually need to work in parallel with other teams in the same code base ‒ Consistency and Conceptual Integrity (overall, components)
‒ Infrastructure and tools for cross-product and parallel work (CM, CI, CD)
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• Specialists on one particular part of the
product structure - a “component”
– Owns and guards the component
• Develops, builds and delivers the component,
as a result of their work
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Component Teams
Feature
Req.
Req.
Component Team
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Address “Component Architecture”
+ Integrity and responsibility
+ Testability
+ Maintainability
+ Performance
+ Reliability (robustness & usage, well defined API, …)
+ Availability (fault isolation and detection, recovery, …)
+ Scalability
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Component Teams
Feature
Req.
Req.
Component Team
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! Need to break down Features into “component-oriented”
requirements
‒ Understanding of the whole picture and Customer value
! Awareness of overall Product Structure and Architecture
‒ Solution consistency and integrity
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Component Teams
Feature
Req.
Req.
Component Team
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What type of teams to prefer?
• Can mix Feature Teams with Component Teams in
various constellations
– Prefer Feature Teams (focus on making Features done)
– Complement with Component Teams where strategic
• Note: Feature and Component Teams are stereotypes
– Try out what works, reflect and adapt
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Scaling up, multiple teams
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A more complex product …
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working releasable
increment of the product
(Customer perspective)
One single team cannot span all the skills needed to build
increments of the “product”, nor meet the demand of work!
Feature
Customers &
Stakeholders
Feature
Feature
Feature
Feature
Feature
Feature
Higher demand
of work …
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A group of Development Teams
with common focus
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workflow (end-to-end)
Feature
Customers &
Stakeholders
Feature
Feature
Feature
Feature
Feature Team A
Component Team B
• The teams need to collaborate and build working increments of
the product solution together (common responsibility)
• The teams also need to take responsibility for the architecture!
A cross-functional and self-organizing group of teams
working releasable
increment of the product
(Customer perspective)
Architecture and
code must scale!
Feature Team D
Feature Team C
Feature
Feature
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Multiple Development Teams,
Architecture Governance
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workflow(s) end-results
Cross-team governance, examples - Architecture
- Strategies for testing
- CM, CI, CD
- Requirements and User eXperience (UX)
- Infrastructure, environment and tools
- …
Multiple Development Teams,
Governance and Support
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workflow (end-to-end)
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Architecture governance, example
Feature Team C
Feature Team D
Component Team B
Feature Team A
Feature
Feature
I will create a new
asynchronous interface
for our component
Hmm, what is
the point with these
asynchronous calls ..?
Who the heck has
changed the interface?
All integration test
cases fail!
Feature Customers &
Stakeholders
Feature
Feature
Feature
Feature
?!
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Architecture Forum, example
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Architecture
Forum (e.g. virtual team)
Members from different teams can meet and
coordinate architecture issues in a common
Architecture Forum / Community - Possibly facilitated by a senior ”Agile Architect”
Feature Team A
Component Team B
Feature Team C
• Experts that support and governs the
Development Teams
• Ensure common engineering practices –
overall consistency and integrity
• Works close with the Development Teams
– Communicate and explain the big picture
– Coach, mentor, educate, show how, review …
QAs
Arch.
Arch.
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Architecture work, multiple teams
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• Need to map architecture work into
a Scaled Agile method/process
• Examples
– Scaled Scrum set-up
– Kanban, project/program/enterprise level
– SAFe (Scaled Agile Framework)
– …
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Example, common Kanban workflow
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Analyze Develop Waiting for
Validation Validate Waiting for
Dev. Plan Implement Integrated
In Service
Feature
Feature
Feature
Feature
Story
Input
Analyze
• Architecture impact?
• Specify overall solution
• Break down work What team builds what?
Develop
• Plan
• Manage dependencies
• Coordinate and takt work
• Guard conceptual integrity
Validate
• Validate result
(Customer perspective)
• Validate solution
(reflect and improve)
Feature
Feature
Feature
Story
Story
Story
Feature Feature Story Story Story
Feature Story Story Story
Feature Story Story Story
Feature
Story
Story
Story
Story
Story
Story
Story
Story
Feature
Story
Story
Story Story
Story
Story
Note: WIP limits left out for this discussion
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Scaling up, multiple workflows
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QAs
Epic
Epic
Epic
Epic
Multiple workflows (SAFe)
Portfolio
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Epic
Epic
Feature
Feature
Feature
Feature
QAs
Feature Feature
Arch.
QAs
Feature
Arch.
Arch.
Feature
Roadmap
QAs
Epic
Arch.
Need to govern Architecture
within as well as across
the workflows
Solution and “component”
Architecture
Enterprise
Architecture
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References and further reading
Agile Architect
http://www.agilearchitect.org
Agile Modeling, Scott W. Ambler
http://www.agilemodeling.com
Scaled Agile Framework (SAFe)
http://scaledagileframework.com
Lean Kanban University, David J. Anderson
http://www.leankanbanuniversity.com
Succeeding with Agile, Mike Cohn
https://www.mountaingoatsoftware.com
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Om utbildningen !Certifierad IT-arkitekt Master
Michael Thurell Handledare och lärare
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Kort om utbildningen
Start 1999
K54 sep 2015 >1500 IT-arkitekter
6 X 2 dagar
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Innehåll
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Innehåll
1 Vad är IT-arkitektur?
Vad gör en IT-arkitekt?
Begrepp: System, egenskapskrav, ”tactics”,
mönster, ramverk, komponent, tjänst etc.
Standarder & arkitekturramverk:
ISO/IEC/IEEE 42010, Kruchten 4+1,
Rozanski & Woods, RM-ODP, TOGAF, Zachmann
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Innehåll 2
Verksamhetsnära IT-arkitektur.
Verksamhetsobjekt och verksamhetskomponenter.
Verksamhetsmodellering.
Övergripande arkitekturarbete
(Enterprise Architecture).
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Innehåll
6
3 Teknisk IT-arkitektur.
Arkitektur för distribuerade system.
Infrastruktur, middleware, databaser, säkerhet,
utvecklingsplattformar etc.
Realisering av egenskapskrav.
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Innehåll
7
4 Metoder för arkitekturutveckling:
ADD, RUP, etc. Olika typer av Agila metoder etc.
Modellering med UML
Styrning av arkitekturarbete (Governance)
Metoder för arkitekturutvärdering: Scenariobedömningar, ATAM etc.
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Innehåll 5
Mönster och stilar för integration.
”Point-to-Point”, ”Buss”, ”Nav” etc. SOA, EAI, ESB, etc.
Molnet.
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Innehåll
6 Kvalitet och lönsamhet.
Test.
Ledningens syn på IT-arkitektur.
Trender.
Redovisning av uppsatsarbete.
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Vad ”utmärker” en IT-arkitekt ? Egenskaper • Kommunikativ & pedagogisk
– förstå olika intressenters synpunkter och krav
– förmedla, förklara och tydliggöra olika aspekter/vyer av en IT-arkitektur för olika intressenter
• Analytisk & strukturerad – se och förstå helheten – förenkla komplexa frågeställningar – kunna identifiera de viktigaste
arkitekturdrivande kraven • Kreativ • Ödmjuk • Etc.
Förmågor • Kunna behärska och tillämpa
etablerade principer och metoder för utformning av IT-lösningar
• Kunna förstå & värdera verksamhetsmodeller
• Kunna identifiera de arkitekturdrivande kraven i en komplex kravbild
• Kunna omsätta systemkraven till en realiserbar arkitektur
• Kunna behärska och tillämpa viktiga stilar & mönster för en IT-arkitektur
• Kunna beskriva & kommunicera arkitekturen till aktuella målgrupper