Demystifying SOA Whats in it for you

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Demystifying SOAWhats in it for you

• Tom Clarke
• National Center for State Courts
• tclarke_at_ncsc.dni.us

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The Business Context

• Many independent agencies and funding bodies
• Many levels and branches of government
• Widely different scales of operation
• Wide variety of legacy hardware and software
• Constantly changing requirements

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Global Justice Information Sharing Initiative
Advisory Committee(Global)

• 22 of 31 groups state or local.
• 4 Working Groups
• Standards
• Security
• Privacy
• Intelligence)

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The Challenge Information Sharing Across
Agencies and Disciplines

• The Vision
• Any member of the Justice Community can access
  the information they need to do their job, at the
  time they need it, in a form that is useful,
  regardless of the location of the data.
• A Framework for Justice Information Sharing
  Service-Oriented Architecture (SOPA), The Global
  Infrastructure/Standards Working Group,
• Dec. 9, 2004

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Solution Service Oriented Architecture (SOA)

• Uses the open standards of the Internet.
• Builds services one business process at a time.
• Technology now reflects reality of government
  information sharing.
• Dramatic management and policy implications.

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SOA Attributes

• Focus is on linking system to system.
• Uses STANDARDS for making the links.
• Exploits Internet- based middleware.
• Independent of hardware.
• (Barrys Audio System Analogy)

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Web Services Version of SOA Assumptions

• Open Internet Protocols
• Define content (GJXDM)
• Define services
• Content
• Delivery mechanism
• Business rules (security, privacy, IDs)
• Data comes from the Sources
• Think of Internet searches

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SOA Development

• Requirements
• Open Standards
• Content data (GJXDM)
• Delivery messaging profiles
• Common Business Rules
• Registries
• Requirements
• Standards (official versions)
• Instances (examples)

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Meeting the Requirements

• Standards Setting Bodies
• Public GJXDM/Global, NIEM
• Private W3C, OASIS, WS-I
• Modeling and Testing
• Wisconsin, NLETS, ARGIS, JNET, Colorado, NCSC,
  CAP, ICE

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Whos Doing What?

• Security WG (security ID)
• Privacy WG (privacy, public access)
• Standards WG (services, registries, business
  rules, governance)
• XSTF NIEM (GJXDM)
• GTTAC (message profiles)

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Management Policy Implications

• Incremental Development
• System is an accumulation of individual services.
• Management Involvement
• Services are developed around business processes.
• Legacy Systems
• Legacy systems are leveraged.

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Management Policy (Cont)

• Investment Strategies
• On-going investment
• Fallacy of building analogy
• Data Ownership
• Data stays at home
• Virtual warehouses
• SOA itself a Work-in-Progress
• Begin skill development

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Major Business Implications

• Reuse of services (messages) and micro-services
  (data components) to eliminate redundant
  development
• Governance of services and data components by
  multiple groups by appropriateness

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References

• Office of Justice Programs
• http//it.ojp.gov/index.jsp
• Douglas K. Barry
• http//www.service-architecture.com/
• Web Services and Services Oriented Architectures
  A Savvy Managers Guide
• Tclarke_at_ncsc.dni.us