Cursus Service Oriented Architecture (SOA)

Introduction to SOA

• Traditional EAI Approach 
• Problems With Traditional EAI Approach 
• Enter Service Oriented Architecture (SOA) 
• Build the Services 
• We Can Easily Change the Process 
• Change Flow Using Legacy Approach 
• Replacing an Application 
• Other Advantages 
• Business Advantages 
• Adoption Stages

A Service Oriented Methodology

• The SOA adoption roadmap
• Service lifecycle
• Three analysis approaches
• Service oriented analysis
• Service oriented design
• Introduction to service oriented patterns.

SOA past and present

• From XML to Web Service to SOA 
• o How SOA was done before 
• o Emerging standards for SOA 
• o Compare SOA with other architectures

What is Service Oriented Architecture?

• Creating a common understanding of SOA 
• The evolution of SOA
• Introduce the concepts of services and SOA
• Design principles of SOA
• The relationship between SOA and web services
• The advantages and risks of SOA  

Interpreting Analysis Artefacts

• Why use models with SOA.
• Difference between model and methodology.
• Why use the Unified Modeling Language? 
• Introducing UML, the notation.
• Identifying business processes.
• Notation, Patterns and Methodology.
• Which Methodology to choose?.

Service Classification

• Service Types
• Enterprise level services
• Basic Services
• Data-centric services.
• Logic-centric services
• Intermediary services
• Process-centric services

Introduction to Business Process

• How a collection of services perform a task. 
• Simple request response interaction 
• Complex interaction involving many services. 
• Need for a coordinator service emerges. 
• Birth of orchestration or business process. 
• Composing processes using processes.
• Business Process Execution Language (BPEL) 
• Example business processes.

Service enablement

• Basic web services elements 
• Core web services standards stack
• The Importance of WSDL
• The design of SOAP
• The use of registries via UDDI
• The basic concepts of service orientation

Distributing a Service Acros a Network

• Aligning functional and nonfunctional requirements
• The role of Intermediaries In Service Networks
• Introductions to WS-* Extensions
• The three expansion stages of SOA

The SOA Building Blocks

• Application frontends
• Using an Enterprise Service Bus
• The benefits of a Rules engine
• Why use a service repository
• Detailed service contracts

Enterprise Service Bus (ESB)

• Objectives 
• Service Invocation 
• Legacy System Integration 
• Web Services to the Rescue 
• The role of ESB in SOA 
• Security and ESB

Motivation and Benefits

• The enterprise perspective
• The personal perspective
• Cost savings
• Streamlining the business
• Reuse and resulting benefits

Organizational Roadmap

• Stakeholders and potential conflicts
• Four Pillars of success
• An ideal world
• Recommendations for the SOA Protagonist
• Enforcing substantial change
• Encouraging business involvement

SOA Governance

• The SOA Board
• Managing the service repository
• Documenting contracts
• SOA from the CEO/CIO’s point of view.
• Imposing a SOA methodology
• Avoiding mutual dependencies.
• Why not everything should be re-usable
• SOA Strategies
• Project test and rollout planning
• Vertical versus Horizontal slicing

Conclusion

• The benefits of employing SOA
• Review of common business goals
• The risks associated with the SOA approach
• Evaluating tradeoff strategies