SOA Delivery lifecycle
Jump to navigation
Jump to search
Following general stages in SOA delivery lifecycle are recognized[1]
- service-oriented analysis
- service-oriented design
- service development
- service testing
- service deployment
- service administration
Top-down approach[edit]
- promotes the formal definition of corporate business models prior to modeling service boundaries
- can result in the highest quality level of SOA
- it also imposes a significant volume of up-front analysis work
Bottom-up approach[edit]
- delivery of application services on an "as needed" basis
- is easy to follow
- does not result in the advancement of service-orientation or process-enabled SOA
Agile approach[edit]
- meet in the middle
- on-going analysis is supported, while still allowing the immediate delivery of services
- as analysis progresses, existing services are revisited and revised as required
Service-oriented design (steps)[edit]
- compose SOA (define service layers,position core standards, choose SOA extensions)
- design entity-centric business services
- design application services
- design task-centric services
- design service-oriented business process
SOA Layers[edit]
An example of possible SOA layers and their characteristics.
| Characteristic/Layer | Basic services | Intermediary services | Process-centric services | Public (enterprise) services |
|---|---|---|---|---|
| Description | Simple data-centric or logic-centric services | Technology gateways, adapters, façades, and functionality-adding services | Encapsulate process logic | Service shared with other enterprises or partner organizations |
| Implementation complexity | Low to moderate | Moderate to high | High | Service specific |
| State management | Stateless | Stateless | Stateful | Service specific |
| Reusability | High | Low | Low | High |
| Frequency of change | Low | Moderate to high | High | Low |
| Mandatory element of SOA | Yes | No | No | No |