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Service-oriented analysis and design (SOAD) is a methodology that refers to the modeling and design for service-oriented architecture (SOA) applications.
A SOAD approach in designing SOA applications requires the following key elements:
- Process Model: Defining process and notation by orchestrating object-oriented analysis and design (OOAD), business process modeling (BPM) and enterprise architecture elements. Additional elements can also be defined if required.
- Instructions: Structured way to conceptualize services.
- Standards: Provide well-defined, quality factors and best practices of service, capability, data and constraint granularity. Roles must be well-defined as well, and lay out whether it is a developer, architect or analyst who is responsible for each fraction of the work.
- Artifacts: Define what is not a good service – such as services that are not reusable – and therefore do not qualify as SOA residents.
- Quality of Service: Facilitates end-to-end modeling and provides comprehensive tool support.
Techopedia Explains Service-Oriented Analysis and Design
The existing SOA modeling disciplines such as OOAD, EA frameworks, and BPM are not able to meet the requirements when applied independently to SOA applications. Early implementation of SOA projects that were developed in OOAD, EA frameworks and BPM only cover a portion of SOA architecture. Thus, SOAD came into existence to ensure successful and full implementation of SOA applications.
SOAD is a holistic modeling methodology that builds upon existing, well-disciplined and proven methodologies: OOAD, EA frameworks and BPM. In addition to this combination of proven methods, the following important concepts and aspects must also be considered in an SOAD approach:
- Service categorization and aggregation
- Policies and aspects
- Meet-in-the middle processes
- Semantic brokering
- Service harvesting and knowledge brokering
SOAD is applicable to many applications such as enterprise applications and architectural styles that are beyond SOA. In addition, current developments of the SOAD approach are also found in the reusable architectural decision model and cloud computing.
