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Roadmap to SOA

Governance of agile service oriented projects

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If all politicians mulled over god If all politicians mulled over god and the earth before they acted and the earth before they acted and not after they did, we would and not after they did, we would

have a better state!have a better state!

Platon, On the StatePlaton, On the State

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Orchestration Replaces OrdersOrchestration Replaces OrdersSOA is designed to be built SOA is designed to be built on convergence instead of on convergence instead of linearitylinearity

Linear models will Linear models will imperatively failimperatively fail

SOA requires an SOA requires an implementation implementation independent from sequenceindependent from sequence

Wikis are best prove of Wikis are best prove of concept!concept!

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Societies work and depend on Societies work and depend on self-organizing strategies, self-organizing strategies,

only!only!

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Project Management Concepts

Waterfall Convergence Chaos (= holistic or self-organizing)

Chaos models are variations of convergence models

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Understanding IT as a Service

Governance is oriented on organisation of societies

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Team Organisations

Teams are tailored to subject matters(“segregation of concerns”) Business needs not organization shall drive team setup

Every team is led by an IT and a business expert Assures a balance between business and technical requirements

The leaders of a team can be members of several teams It is actually encouraged that the responsibles roam teams

Every team has at least one member who is a subject expert in another team This assures that knowledge is transportable and communicated

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Project Timing and Conduct

SOA projects are non-linear Self-Containment

Ideally no single object‘s implementation or change should block other activities

Interface Stability Every system build interfaces first Dummy responses can replace fully functionality

Self-Test and Sample-Use Every service needs to prove its full functionality in a self-test Every set-up needs to be demonstrated by a sample service call

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Team Management

Team leaders recruit their members Imagine it like „street-football“, captains are elected and then

pick „their“ players

Every team has fully responsibility for subject Every team knows the core tasks of other teams Teams can ask other teams for „services“ Management is the „Captain“ of the project Captain decides about course Captain is arbitre between teams

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Global Project Service Providers

Project head understood as the „Captain“ of all teams Project coach as main mediator and arbitre Secretary for logistics

Central service for hotel, travel, expenses, shopping...

Professional language translator Developer or consultants MUST not do translations

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Management inspects for disorders

The Captain controls the course and mediates contention and intervenes only when the team

does not work in harmony

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Reporting

Teams reports disorders

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Example of project disorders

Delays in delivery of service interfaces Quality deficiencies Illicit side-effects of implementations Violation of self-containment commandment Overuse of ressources Overloading from work

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Project Timing

Plan is built around sync-points (mile-stones) only Only deviations from target are reported to captain Teams agree sync-points themselves

An arbitration commitee resolves contention

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SOA Governance is based on SOA Governance is based on convergenceconvergence

Many activities run in parallelMany activities run in parallel

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Governance responsibilities

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Organisation interaction in a SOA meta model

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Sample governance organizational structure

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Real Life Analogy of Social Development

Pre-urban village Every farmer needed to be

allrounder• smith, miller, baker etc.

Every settlement needed to cater for water, energy and fortification

Superior inventions in one village might not be spread out and be forgotten eventually

Costs for automation and infrastructure very high

City Sophisticated tasks are delegated

to specialists• Miller, Baker, Smith etc.

Common and efficient infrastructure

Speedy evolution• intensive reuse

Cost efficiency• Redundancy is avoidable

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Why Wikis Work and Projects Don‘t

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Loosing Money in Development

Classical Isolated Tasks One developer programs end to end

• + one responsible

• - needs detail knowledge in all areas

• - all developers need detail knowhow

• - likelyhood of redundent work

• - very few reuse of components

• - risk of developer autism

Team organisation Several developer (even on small tasks)

• - Project know how distributed

• + experts do expert works

• + high degree of reuse

• + communication and collaboration mandatory

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Societies produced different management strategies

Imperative, devote, chaotic

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What The Others Do?

Imperative Military

• Works with small teams and linear tasks

• Suitable within a team but not to control collaboration

Devote Abbey

• Only suitable for ambitious, small and sworn in teams

• Typically found in science and labs

Chaotic Orchestra

• The only choice starting from a certain team size

• Used also for meta management

• Most projects follow the orchestra principle

• Often they are in contention with governance ruling

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Areas of SOA Benefit

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Meta Data Management

metadata provides access to data objects and enables policy-based storage management.

essential to information lifecycle management (ILM) Key factors that drive the design of a metadata

management program metadata management will benefit your compliance

strategy, externally facing and service applications, and internally shared applications.