Fig. 1. An example of the SCW environment.

Fig. 2. General state of the art for architectures supporting SCW issues.

Fig. 3. The WARP architecture.

Fig. 4. Decomposing an elementary service.

Fig. 5. WARP service population procedure.

Fig. 6. Service specification data model.

Fig. 7. Summary of WARP workflow models.

Fig. 8. Dynamic models.

Fig. 9. Failure Atomicity View notations and concrete example.

Fig. 10. WARP process-oriented data model.

Fig. 11. A control model for the travel agency domain.

Fig. 12. (a) Control model for the travel agency domain. (b) Role collaboration model for the travel agency domain.

Fig. 13. Composing web services based on the travel agency control model.

Fig. 14. A software engineering process for developing the WARP environment.

Fig. 15. Agent interactions for two modes of workflow enactment.

Fig. 16. The WARP prototype environment and low-level object-oriented design.

Table 1. Evaluating the operational modes of the WARP environment (percent latency)