Designing and implementing COO: design process, architectural style, lessons learned

This paper reports on the design and implementation of a software development framework named COO (which stands for COOperation and COOrdination in the software process). Its design process is first detailed and justified. Then, the paper emphasizes its layered and subject-oriented architecture. Particularly, it is shown how this architectural style leads to a very flexible and powerful way of defining, integrating and combining services in a software development environment.