This document discusses modeling a service-oriented architecture (SOA) project using IBM's Service Oriented Modeling and Architecture (SOMA) methodology. It describes SOMA's stages of service identification, specification, realization, implementation and deployment. It recommends using UML 2.0, SoaML and tools like IBM Rational Software Architect and ARIS to model SOA artifacts at each stage. Finally, it proposes an incremental adoption plan and reference architecture for the SOA transformation.

1. Design SOA Project using IBM SOMA
Author – Shibu Subhakaran

2. Contents
 IBM SOMA and SOA transformation
 How to adopt SOMA for SOA Projects
 Modeling SOMA
 Proposed Architecture
 Proposed Middleware Tools and technologies

3. SOA Transformation Activities
Assessment
SOA Readiness
SOA Strategy
SOA Roadmap
SOA Technology
Analysis
SOA Architecture
SOA Maturity
SOA Performance
SOA Security
Implementation
Modeling
Design
Development
POC
Governance
Governance strategy
Governance framework development
WSRR
IBM SOMA

4. SOA Lifecycle and Activities – SOMA view

5. SOMA Stages
The IBM SOMA soa development method divides the whole soa
development lifecycle into:
 Service Identification
 Service Specification
 Service Realization
 Service Implementation
 Service deployment

6. SOMA Modeling Language, Tools
Modeling SOA using IBM SOMA uses -
 UML 2.0
UML 2 specifications have been created to address two
main points:
Service-oriented architectures
Model-driven development
UML 2 has many improvements and they are about these
topics: Complex structures
Activities
Interactions
State machines
 SoaML
A uml Profile for modeling SOA artifacts - service architecture, contracts,
service interfaces
 UML2 supporting Tools – IBM Rational Software Architect, ARIS UML
Designer(ARIS 9.7)

7. Software AG ARIS for SOA Modeling
 ARIS Can be used for modeling different stages of SOA
Transformation :
• SOA Governance
• Business Architecture and Business Services Modeling
• SOMA Activities (Service Identification, Specification, Realization)

8. Service identification – Goal Service
 Goal Service modeling - Map business goals directly to service
 Identifying services support the business component

9. Service identification – Top Down
 Input – Business process, Use cases
 Steps
• Identify Service elements from business process (or sub system)
• Identify Sub tasks of Service element
• Identify Service Operation from business task

10. Service Identification – Bottom up
 Existing System Analysis
 Involves the analysis of the existing applications (legacy, COTS etc.)
in Production.
 requires the participation of specialists for the systems

11. Service Specification
 Service specification consists of making most of the architecturally
significant decisions of our design.
 consists of architecting our services.
 during service specification all service consumers, specifications,
providers, and partitions are specified in terms of their structure and
behavior.

12. Service Specification – Service Architecture
 Service Architecture
 The service architecture gives complete view of Service
consumers, Atomic services, composite services

13. Service Realization
Service Realization involves :
 Service Realization shows the complete design
 Detailed view of all the operations in services
 Components used by the service
 Design Patterns used for the implementations

14. Service Realization - Modeling
 Components and dependency relationships
 Service Components, Interface Diagram
 Pattern Representation

15. Method adoption plan
 Incremental Approach
 Start small
 Add new integration services, business services and processes
 over time, as part of specific projects, in response to specific
business needs
 Flexibility and capabilities increase exponentially with each new
service.
 Analyze and Short list a Group of the legacy/COTS applications
 Use SOMA for the identified applications

16. Reference Architecture
 SOA Ref Architecture

17. Summary
 SOA Transformation Process, Tasks, Activities
 How SOMA can be used in SOA Based Projects
 Modeling SOMA Activities
 How ARIS can support the modeling for SOA and SOMA phases
 Solution Architecture for SOA