Section 5.3. Conclusion

5.3. Conclusion

In this chapter, we have introduced four classes of services: basic, process-centric, intermediary, and public enterprise services. These different services are predominantly used by the application frontends, which are the active elements of the SOA but are not services themselves. It is important for a designer of a Service-Oriented Architecture to be aware of the distinctive characteristics of the different service types because they all have different requirements with respect to design, implementation, operation, and maintenance.

In addition, this service classification is ideally suited to provide an overall structure within the SOA that is expressed by the different SOA layers, including enterprise layer, process layer, intermediary layer, and basic layer.

References

[GHJV95] Gamma, Erich, Richard Helm, Ralph Johnson, and John Vlissides . Design Patterns. Addison-Wesley, 1995.

[Her2000] Herzum, Peter and Oliver Sims . Business Component Factory: A Comprehensive Overview of Component-Based Development for the Enterprise. OMG Press, 2000.

[Rei1992] Reisig, Wolfgang . A Primer in Petri Net Design. New York: Springer Compass International 1992.