SOA 101

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• SOA 101
• David S. Linthicum

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• Blogs
• eBizq.net Linthicum Channel
• IT Toolbox CEOs Guide to SOA and Application
  Integration
• InfoWorld Real World SOA
• Weekly Podcast
• www.soaexpertpodcast.com
• New Gig
• CEO BRIDGEWERX
• New Book 12 Steps to SOA

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SOAWhats New Here?
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The Integration Challenge

• The N-squared Integration Problem

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Made Worse by External Integration

• 70 of IT development budgets are spent on
  integrating different systems ZapThink

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The Rats Nest Architecture
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IT Fulfilling Business Requirements

• Business Requirements
• Service Customers
• Manage Operations
• Increase Worker Productivity
• Communicate with market
• Ensure reliable and secure operations
• Develop new products and services
• Respond to new business drivers

• IT Capabilities
• Implement CRM Systems
• Implement ERP Systems
• Manage desktop environments
• Manage server environments
• Manage email systems and web sites
• Manage network and storage operations
• Develop applications

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However, it rarely works that way

• Requirements change
• Interpretations often inaccurate or limited
• Lengthy development cycles impervious to change
• Implementations cast in concrete

Result IT that places limitations on Business
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What is a Service-Oriented Architecture?

• Access software via Services that are easy to
  find and connect to
• Web Services provide a standard way of building
  and accessing Services
• Developers integrators can build applications
  out of Services

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Application Integration Solution Types
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The High Level Integration Stack
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User Interface
Logic
Logic
Data
Data
Transformation Formatting
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(No Transcript)
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Service Oriented Application Integration

• Service integration to create a composite
  application
• Sharing business logic
• Sharing code
• Sharing processing
• Shared programs
• Shared transactions
• Shared objects

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Application Integration is Evolving
Business Process Control (Process Integration
Oriented)
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Contrasting Three Forms of Integration
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Multistep Process (Information-Oriented)
Dominates For Now
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Process Orchestration will Control SOA
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Composite Application
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Value of Services

• Limitations of information-oriented integration
• Limited visibility
• Limited reuse
• Latency
• Advantages of leveraging service-oriented
  integration
• Visibility at the information and the behavior
  levels
• Reuse of services among trading partners
• Real-time integration

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The Economics of Integration
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The Economics of Integration
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The Economics of Integration
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The Economics of Integration
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The Economics of Integration
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Development model for SOA

• Integration tightly couples end-points
• Interoperability considers each end point
  separately
• Producer Provides service
• Consumer Consumes the service
• Producer/Consumers describe their interfaces and
  are then connected at run time (late binding)
• Focus on agreement of business service interface
• Do not focus on operating system, implementation,
  etc.

SOA
Producer
Consumer
(Shared
Services)
Consumer Interface
Producer Interface
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Gartners Architecture
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Directions for SOA
Three Levels of Web Service Engagement
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Goals and Characteristics of a SOA

• Improved Adaptability and Agility
• Respond to business needs in near real-time
• Functional Reusability
• Eliminate the need for large scale rip and
  replace
• Independent Change Management
• Focus on configuration rather than programming
• Interoperability instead of point-to-point
  integration
• Loosely-coupled framework, services in network
• Orchestrate rather than integrate
• Configuration rather than development to deliver
  business needs

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Business Benefits of Loosely Coupled Approach
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Thanks!