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SOA portfolio review objectives include determining if the service design methodology, service contract boundaries, and service coupling minimize portfolio redundancy and duplication while maximizing adoption. Discrete tasks may evaluate:
- Service contract boundaries and resultant impact on consumption and orchestration.
- Coupling between service design, service description, proxy/stub code, and core business logic code to determine expected agility, development cost, and maintenance burden.
- Service design guidelines, service contract definition and associated policies
- Expected service consumption and orchestration.
- Process used by developers to discover, gain access, evaluate, and integrate portfolio services.
- How the team builds and deploys artifacts and how the team develops services.
- Does the design allow for the accomplishing key goals such as: modularity, configurability, and flexibility. This should lead to consideration of principles like loose coupling, abstraction, granularity, interoperability, and separation of concerns.
- Can service consumers readily discover relevant services, and can consumers easily understand how the service matches their functional and non-functional requirements
- How can service design, service development guidelines, service governance, service management, and service storefronts increase service adoption and minimize redundancy
Client deliverables into the evaluation process may include:
Design Models
- Any existing high-level uses cases, requirements, and descriptions for planned and existing service interfaces and service deployments
- Business process and business capability models
- Service models and interface descriptions
- Review code artifacts and Maven artifacts generated during the implementation
Development governance practices (i.e. application, integration, services)
- Service design guidelines
- Development tooling and frameworks
- Service implementation process, code artifacts, and Maven artifacts.
Service integration, deployment and release engineering guidelines (i.e. administration, monitoring, solution provisioning, API key management, security integration)
Run-time policy requirements and enforcement mechanisms
- Security policies (i.e. application, integration)
- Service level agreements
- Organizational structure (i.e. IT departments, competency centers, team roles and responsibilities)
Service Portfolio Map
- Applications / Projects
- Services / API
- Business capabilities and business domain
- Usage
- Cost
SOA Portfolio Review recommendations should span the following workstreams:
- Strategy
- Governance
- Service Models
- Standards
- Development processes
- Organizational dynamics
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